--- product_id: 2957646 title: "351R1 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 12),Black" brand: "dri mark" price: "฿2231" currency: THB in_stock: true reviews_count: 11 category: "Dri Mark" url: https://www.desertcart.co.th/products/2957646-351r1-counterfeit-bill-detector-marker-pen-made-in-the-usa store_origin: TH region: Thailand --- # Pocket-sized for on-the-go fraud protection Instant chemical reaction in seconds 3x more ink for extended use 351R1 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 12),Black **Brand:** dri mark **Price:** ฿2231 **Availability:** ✅ In Stock ## Summary > 🛡️ Spot fakes fast, protect profits smarter. ## Quick Answers - **What is this?** 351R1 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 12),Black by dri mark - **How much does it cost?** ฿2231 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/2957646-351r1-counterfeit-bill-detector-marker-pen-made-in-the-usa) ## Best For - dri mark enthusiasts ## Why This Product - Trusted dri mark brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Portable:** Slim, pocket-sized design fits perfectly in your manager’s toolkit—security anywhere, anytime. - • **Bulk Pack Advantage:** 12 pens per pack means you’re always stocked and ready to protect your revenue. - • **Triple Ink Capacity:** Lasts 3x longer than standard pens—more checks, less hassle. - • **Instant Authenticity Check:** Chemical-sensitive ink reveals counterfeit bills in seconds—no guesswork. - • **Universal Currency Compatibility:** Works flawlessly on all U.S. bills from 1959 onward—future-proof your business. ## Overview The Dri Mark 351R1 Counterfeit Bill Detector Marker Pen is a professional-grade, pocket-sized tool designed to instantly identify fake U.S. currency. Featuring 3 times more ink than standard pens, it uses chemically sensitive ink that marks genuine bills amber and counterfeit bills dark brown or black. Compatible with all U.S. currency designs from 1959 onward, this pack of 12 pens ensures continuous fraud protection for businesses on the move. ## Description Highly effective and inexpensive tool for detecting bad bills. Simply make a small mark on U.S. currency. Chemically sensitive ink works instantly. An amber mark passes the test, while a dark brown or black mark fails, meaning the bill is likely counterfeit. Works on all new design U.S. currency (bills series 1959 and later). Review: Well worth the money - I own a small clothing business and recently I have been having trouble picking out the counterfeit bills. I decided to purchase these to fight the problem. They are very simple to use and when marked on a counterfeit bill it makes an obvious dark mark. It has saved me from accepting numerous 50 dollar and 100 bills since I have purchased it. Well worth it. Also the prices on desertcart can't be beat. At a local store I found them at more than double the cost on desertcart. I would buy them again. Review: Did the job. - Showed up on time, did what we needed. ## 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 | B0000AQOBJ | | Additional Features | Portable | | Best Sellers Rank | #175,120 in Office Products ( See Top 100 in Office Products ) #77 in Counterfeit Bill Detectors | | Body Shape | cylindrical | | Brand Name | Dri Mark | | Color | Black | | Customer Reviews | 4.4 4.4 out of 5 stars (200) | | Global Trade Identification Number | 00070889035165, 50070889001370 | | Hand Orientation | Ambidextrous | | Included Components | Counterfeit Detector Pen pack of 12 | | Ink Base | Hybrid | | Ink Color | Black | | Is Waterproof | false | | Item Dimensions | 5.75 x 3.25 x 1.25 inches | | Item Dimensions D x W x H | 3.2"D x 5.8"W x 1.3"H | | Item Type Name | Currency Verifying Pen | | Item Weight | 0.29 Pounds | | Line Size | 2 months | | Manufacturer | DRI-MARK PRODUCTS | | Manufacturer Part Number | 351R-1 | | Material Type | Plastic | | Model Name | Smart Money | | Model Number | 351R-1 | | Number of Items | 1 | | Number of Pieces | 12 | | Pattern | Checkered | | Point Type | Medium | | Recommended Uses For Product | Writing | | Style | Counterfeit Pen | | Surface Recommendation | Paper | | Target Audience | Adult | | Theme | Security | | UPC | 070889035165 804993412211 999992627992 999993914152 801593149219 809301932481 033587463210 640206512855 013243031885 | | Unit Count | 12.0 Count | | Warranty Description | Contact Manufacturer | | Water Resistance Level | Not Water Resistant | | Writing Instrument Form | Marker Pen | ## Product Details - **Brand:** Dri Mark - **Ink Color:** Black - **Number of Items:** 1 - **Point Type:** Medium - **Recommended Uses For Product:** Writing ## Images ![351R1 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 12),Black - Image 1](https://m.media-amazon.com/images/I/71xZzJ-04cL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Well worth the money *by L***8 on June 21, 2015* I own a small clothing business and recently I have been having trouble picking out the counterfeit bills. I decided to purchase these to fight the problem. They are very simple to use and when marked on a counterfeit bill it makes an obvious dark mark. It has saved me from accepting numerous 50 dollar and 100 bills since I have purchased it. Well worth it. Also the prices on Amazon can't be beat. At a local store I found them at more than double the cost on Amazon. I would buy them again. ### ⭐⭐⭐⭐⭐ Did the job. *by B***T on October 16, 2023* Showed up on time, did what we needed. ### ⭐⭐⭐⭐⭐ Great pens that save you money in the long run! *by L***N on December 20, 2014* We've got a big counterfeit bill problem in the city where I work, so we decided to start checking. I priced these pens at a few big box stores and they all wanted a ton of money for just 2 or 3 pens. Luckily I stumbled across these on Amazon. I gave them out to all our drivers and they certainly work--they've kept us from accepting at least 6 counterfeits in the past month. A solid product at a good price. ## Frequently Bought Together - Dri Mark 351R1 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 12),Black - Volcanics Blue Dry Erase Markers Low Odor Fine Whiteboard Markers Thin Box of 12 - Amazon Basics Fine Tip Point Permanent Markers for Office, School, and Home Use, Black, 24 Pack --- ## 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.co.th/products/2957646-351r1-counterfeit-bill-detector-marker-pen-made-in-the-usa](https://www.desertcart.co.th/products/2957646-351r1-counterfeit-bill-detector-marker-pen-made-in-the-usa) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-25*