---
product_id: 69082638
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)"
brand: "dri mark"
price: "$31.05"
currency: USD
in_stock: true
reviews_count: 5
category: "Dri Mark"
url: https://www.desertcart.us/products/69082638-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in
store_origin: US
region: United States of America
---

# Instant chemical reaction for quick detection Compact pocket size for on-the-go 3x more ink for extended use 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)

**Brand:** dri mark
**Price:** $31.05
**Availability:** ✅ In Stock

## Summary

> 🕵️‍♂️ Spot fakes fast—because your money deserves the truth!

## 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) by dri mark
- **How much does it cost?** $31.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/69082638-dri-mark-351b1-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

- • **Made in the USA:** Trusted quality and reliability from a domestic manufacturer, ensuring top-tier fraud prevention.
- • **Pocket-Ready Design:** Slim and lightweight at just 13.6g, it fits seamlessly into your daily carry for instant fraud checks anywhere.
- • **Triple Ink Capacity:** Mark more bills without running dry—3x the ink means fewer refills and more confidence.
- • **Instant Authenticity Check:** Chemically sensitive ink reveals counterfeit bills in seconds—amber means legit, dark means suspect.
- • **Universal Currency Compatibility:** Works flawlessly on all U.S. currency designs from 1959 onward, keeping you protected across generations.

## Overview

The Dri Mark 351B1 Counterfeit Bill Detector Marker Pen is a pocket-sized, chemically sensitive tool designed to instantly verify the authenticity of U.S. currency from 1959 onward. Featuring three times more ink than standard markers, it offers extended use and reliable fraud detection with a simple color change—amber for genuine bills and dark for counterfeit. Made in the USA, this lightweight pen is an essential companion for professionals who demand quick, trustworthy money loss prevention.

## 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: No funciona muy bien - Lo use en una hoja de maquina y marco negro. Luego lo use en un billete de dolar en tres puntos distintos y en todos dio un tono diferente. En lo personal, no me ayuda mucho
Review: Fonctionne bien - Fonctionne bien

## 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 |
|---------------|-------|
| Manufacturer | DRI-MARK PRODUCTS |
| Brand | Dri Mark |
| Model Number | 351B-1 |
| Product Dimensions | 19.05 x 8 x 1.65 cm; 13.61 g |
| Colour | Black |
| Material Type | Not Appilcable |
| Number of Items | 1 |
| Size | 1 Pack |
| Manufacturer Part Number | 351B1 |
| Item Weight | 13.6 g |

## 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)

## 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

### ⭐⭐⭐ No funciona muy bien
*by F***G on 14 March 2019*

Lo use en una hoja de maquina y marco negro. Luego lo use en un billete de dolar en tres puntos distintos y en todos dio un tono diferente. En lo personal, no me ayuda mucho

### ⭐⭐⭐⭐⭐ Fonctionne bien
*by F***S on 25 February 2024*

Fonctionne bien

### ⭐⭐⭐⭐⭐ works
*by L***Z on 10 November 2025*

Good works

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-10*