--- product_id: 5090455 title: "Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket Size, Fake Money Checker - Money Loss Prevention Tester & Fraud Protection for U.S. Currency (Pack of 1)" price: "€ 11.84" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.gr/products/5090455-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in store_origin: GR region: Greece --- # UV light cap for security strip check 3x ink capacity - longer use Made in USA - trusted quality Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket Size, Fake Money Checker - Money Loss Prevention Tester & Fraud Protection for U.S. Currency (Pack of 1) **Price:** € 11.84 **Availability:** ✅ In Stock ## Summary > 🕵️‍♂️ Spot fakes fast, protect profits smarter! ## Quick Answers - **What is this?** Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket Size, Fake Money Checker - Money Loss Prevention Tester & Fraud Protection for U.S. Currency (Pack of 1) - **How much does it cost?** € 11.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/5090455-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Triple Ink Power:** 3x more ink than standard pens for extended counterfeit detection without frequent replacements. - • **Pocket-Sized Portability:** Compact design fits easily in your pocket or wallet for on-the-go fraud protection. - • **Instant Chemical Reaction:** Iodine-based ink reacts immediately with starch in fake bills, marking suspicious notes dark. - • **Integrated UV Security Check:** Built-in UV light in the cap reveals hidden security strips on $5+ bills instantly. - • **Trusted American Craftsmanship:** Proudly made in the USA by the original patent holder, ensuring superior reliability and durability. ## Overview The Dri Mark 351B1 Counterfeit Bill Detector Pen is a compact, pocket-sized fraud prevention tool made in the USA. Featuring 3 times more ink than standard pens and a built-in UV light in the cap, it instantly detects counterfeit U.S. currency by chemically reacting to starch in fake bills and verifying security strips on authentic notes. Trusted by professionals, it offers reliable, on-the-spot money loss prevention with superior durability and ease of use. ## Description Product description USA Superior Quality and Durability Dri Mark is the only U.S. manufacturer and original patent holder of counterfeit detector pens. How does the Dri Mark Counterfeit Detector Pen work? The iodine-based ink reacts with starch in fake bills, turning dark. On real U.S. currency (starch-free), the mark stays light. How does the Dri Mark Counterfeit Detector Pen work? The iodine-based ink reacts with starch in fake bills, turning dark. On real U.S. currency (starch-free), the mark stays light. Can it detect foreign bills? Standard pens are for U.S. bills only. Dri Mark’s Universal Pen can check some foreign currencies but not polymer bills. Can it detect foreign bills? Standard pens are for U.S. bills only. Dri Mark’s Universal Pen can check some foreign currencies but not polymer bills. Is it effective on old and new bills? Yes, it works on all U.S. bills since they all use the same cotton-linen paper without starch. Is it effective on old and new bills? Yes, it works on all U.S. bills since they all use the same cotton-linen paper without starch. Can counterfeiters fool the pen? Advanced fakes using real paper (like bleached bills) may pass. Use UV lights or other tools for better security. Can counterfeiters fool the pen? Advanced fakes using real paper (like bleached bills) may pass. Use UV lights or other tools for better security. How long does the pen last? It lasts long due to a larger ink supply. Keep the cap on tightly and store it cool and dry to maximize life. How long does the pen last? It lasts long due to a larger ink supply. Keep the cap on tightly and store it cool and dry to maximize life. Smaller pen, 3 times the ink 2 TESTS IN 1- PROTECT YOUR PROFITS 3 COUNTERFEIT BILL DETECTION TESTS IN ONE FRAUD DETECTION Dri Mark's "Pocket Size" Counterfeit Bill Detector Pen has 3 times the ink and is almost an inch shorter than previous models. Security strip test: powerful UV light is embedded in the cap and is easy to activate; The LED bulb reveals the hidden security stripe found in all 5 dollar bills and higher. WATERMARK, INK TEST, AND SECURITY STRIP: Hold the bill over the lighted panel to see the watermark, pass the front of the bill over the front sensor to detect the ink. UV Light is great for authenticating passports, credit cards, traveler’s checks, driver's licenses & other official documents. Compare with Drimark Counterfeit Pen Detailed Use Quick Test Pen Detection Methods Paper Test Made In the USA Yes Feature Long-lasting ink Feature Nontoxic & portable Learn More Counterfeit Pen Detailed Use Quick Test Pen Detection Methods Paper Test Made In the USA Yes Feature Long-lasting ink Nontoxic & portable UV Dual Test Detailed Use UV & Pen Detection Methods UV, Paper Made In the USA Yes Feature Double detection Feature Quick Test Pen Learn More UV Dual Test UV & Pen UV, Paper Double detection BioGuard Detailed Use Antimicrobial barrel Detection Methods Paper Test Made In the USA Yes Feature Kills 99% of germs Feature Ideal for shared use Learn More BioGuard Antimicrobial barrel Kills 99% of germs Ideal for shared use Flash Test Detailed Use Instant flash check Detection Methods Ink, UV, Watermark Made In the USA No Feature Pocketsize with clip Feature Ideal for retail Learn More Flash Test Instant flash check Ink, UV, Watermark No Pocketsize with clip Ideal for retail Tri Test Detailed Use UV, MG, WM scanner Detection Methods Paper, UV, Watermark Made In the USA No Feature Audible/visual alert Feature Portal Learn More Tri Test UV, MG, WM scanner Paper, UV, Watermark Audible/visual alert Portal Choosing the Correct Detector Device for You & your Business The Dri Mark pen detects fake bills by reacting to starch in wood-based paper, marking dark if fake. UV Detection Pen marks dark on fake bills; UV light in cap checks security threads to confirm authenticity. Detection Machine The Dri Mark Flash Test detects fake bills using ink, watermark, and UV light tests. DriMark Counterfeit Pen counterfeit Pen Review: Very useful! - These pens work as expected. Review: Work great ! - Work great ! ## Features - Simply make a small mark on U.S. currency. - Chemically sensitive ink works instantly. - Amber mark passes the test, while a dark brown or black mark means the bill is suspect. - Works on all new design U.S. currency (1959 and later). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00006IE9P | | Best Sellers Rank | #2,404 in Office Products ( See Top 100 in Office Products ) #3 in Counterfeit Bill Detectors | | Brand | Dri Mark | | Color | Black | | Customer Reviews | 4.7 4.7 out of 5 stars (5,206) | | Date First Available | March 24, 2008 | | Is Discontinued By Manufacturer | No | | Item Weight | 0.16 ounces | | Item model number | 351B-1 | | Manufacturer | DRI-MARK PRODUCTS | | Manufacturer Part Number | 351B1 | | Material Type | Not Appilcable | | National Stock Number | 7520-01-386-1621 | | Number of Drawers | 2 | | Number of Items | 1 | | Product Dimensions | 7.5 x 3.15 x 0.65 inches | | Size | 1 Pack | ## Images ![Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket Size, Fake Money Checker - Money Loss Prevention Tester & Fraud Protection for U.S. Currency (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/71cdU3mIIJL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How does the Dri Mark Counterfeit Detector Pen work?** A: The iodine-based ink reacts with starch in fake bills, turning dark. On real U.S. currency (starch-free), the mark stays light. **Q: Can it detect foreign bills?** A: Standard pens are for U.S. bills only. Dri Mark’s Universal Pen can check some foreign currencies but not polymer bills. **Q: Is it effective on old and new bills?** A: Yes, it works on all U.S. bills since they all use the same cotton-linen paper without starch. **Q: Can counterfeiters fool the pen?** A: Advanced fakes using real paper (like bleached bills) may pass. Use UV lights or other tools for better security. **Q: How long does the pen last?** A: It lasts long due to a larger ink supply. Keep the cap on tightly and store it cool and dry to maximize life. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very useful! *by G***7 on May 11, 2026* These pens work as expected. ### ⭐⭐⭐⭐⭐ Work great ! *by D***T on May 19, 2026* Work great ! ### ⭐⭐⭐⭐⭐ Very practical and useful. *by D***A on April 10, 2026* I bought this counterfeit bill detector pen for my mom, and she is very pleased with it—she absolutely loved it. Many thanks to the seller; it is an excellent product, and I would buy it again. ## Frequently Bought Together - Dri Mark 351B1 Counterfeit Bill Detector Marker Pen, Made in The USA, 3 Times More Ink, Pocket Size, Fake Money Checker - Money Loss Prevention Tester & Fraud Protection for U.S. Currency (Pack of 1) - HVM Counterfeit Money Detector Pen (5 Counterfeit Pens) - Money Marker Bill Detector Pen with Upgraded Chisel Tip - Detect Fake Bills, Universal False Currency Checker Pack - Dri Mark Smart Money Counterfeit Detector Pen with Reusable UV LED Light (DRI351UVB) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/5090455-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in](https://www.desertcart.gr/products/5090455-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-06-23*