---
product_id: 2957646
title: "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"
brand: "dri mark"
price: "€ 43.38"
currency: EUR
in_stock: true
reviews_count: 11
category: "Dri Mark"
url: https://www.desertcart.nl/products/2957646-dri-mark-351r1-counterfeit-bill-detector-marker-pen-made-in
store_origin: NL
region: Netherlands
---

# Instant chemical reaction for quick verification Pocket-sized for on-the-go fraud protection 3x more ink for extended use 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

**Brand:** dri mark
**Price:** € 43.38
**Availability:** ✅ In Stock

## Summary

> 🕵️‍♂️ Spot fakes fast, stay one step ahead!

## Quick Answers

- **What is this?** 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 by dri mark
- **How much does it cost?** € 43.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/2957646-dri-mark-351r1-counterfeit-bill-detector-marker-pen-made-in)

## 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

- • **Pocket-Ready Design:** Compact and sleek for busy professionals on the move
- • **Triple Ink Capacity:** Lasts 3x longer so you never run out mid-check
- • **Instant Authenticity Check:** Chemical ink reveals counterfeit bills in seconds
- • **Fraud Prevention Powerhouse:** Protect your business and wallet with every mark
- • **Universal Currency Compatibility:** Works flawlessly on all U.S. bills from 1959 onward

## Overview

The Dri Mark 351R1 Counterfeit Bill Detector Marker Pen is a professional-grade, pocket-sized tool made in the USA, featuring 3 times more ink than standard markers. It uses chemically sensitive ink that instantly reveals counterfeit U.S. currency (1959 and later) by marking suspicious bills dark brown or black, while authentic bills show an amber mark. Ideal for business owners and managers, it offers reliable, fast fraud protection to safeguard your revenue.

## 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 |
| Best Sellers Rank | #133,442 in Office Products ( See Top 100 in Office Products ) #57 in Counterfeit Bill Detectors |
| Brand | Dri Mark |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (200) |
| Date First Available | June 21, 2007 |
| Ink Color | Black |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.6 ounces |
| Item model number | 351R-1 |
| Line Size | 2 months |
| Manufacturer | DRI-MARK PRODUCTS |
| Manufacturer Part Number | 351R-1 |
| Material Type | Plastic |
| Number of Drawers | 2 |
| Number of Items | 1 |
| Point Type | Medium |
| Product Dimensions | 5.75 x 3.25 x 1.25 inches |
| Shape | L Shaped |
| Size | 12 Count (Pack of 1) |

## Product Details

- **Brand:** Dri Mark
- **Ink Color:** Black
- **Number of Items:** 1
- **Point Type:** Medium
- **Recommended Uses For Product:** Writing

## Images

![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 - 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.

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**Shop now:** [https://www.desertcart.nl/products/2957646-dri-mark-351r1-counterfeit-bill-detector-marker-pen-made-in](https://www.desertcart.nl/products/2957646-dri-mark-351r1-counterfeit-bill-detector-marker-pen-made-in)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-17*