---
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)"
brand: "dri mark"
price: "¥2042"
currency: JPY
in_stock: true
reviews_count: 13
category: "Dri Mark"
url: https://www.desertcart.jp/products/5090455-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in
store_origin: JP
region: Japan
---

# Instant chemical reaction on US currency 3x more ink for extended use Made in the USA for 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)

**Brand:** dri mark
**Price:** ¥2042
**Availability:** ✅ In Stock

## Summary

> 💼 Spot fake bills before they spot you—security in a pen!

## 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?** ¥2042 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/5090455-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

- • **Trusted & Proven:** Top-rated with 4.7 stars and thousands of users safeguarding their cash.
- • **Pocket-Sized Power:** Carry confidence in your pocket—discreet and always ready.
- • **Triple Ink Capacity:** 3x more ink means fewer replacements and more security checks.
- • **Instant Authenticity Check:** Amber mark = legit; dark mark = suspect—know your money instantly.
- • **Universal Currency Compatibility:** Works flawlessly on all US bills from 1959 onward.

## Overview

The Dri Mark 351B1 Counterfeit Bill Detector Marker Pen is a compact, USA-made tool designed to instantly verify the authenticity of US currency. Featuring chemically sensitive ink that changes color on contact, it offers 3 times more ink than standard markers, ensuring long-lasting use. Compatible with all US bills from 1959 onward, this pocket-sized pen is a trusted choice for professionals aiming to prevent fraud and money loss.

## Description

desertcart.com : 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) : Currency Marker : Office Products

Review: works - Good works
Review: Seems okay to me - I tried it on some of my own money. Seems to be fine. I'm gonna pull out the pen when I get change at Walmart. Instead of them looking at the bills, I'm gonna look at the bills.

## 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 | #3,948 in Office Products ( See Top 100 in Office Products ) #4 in Counterfeit Bill Detectors |
| Brand | Dri Mark |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,164) |
| Date First Available | March 24, 2008 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.48 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 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

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

Good works

### ⭐⭐⭐⭐⭐ Seems okay to me
*by F***N on December 27, 2025*

I tried it on some of my own money. Seems to be fine. I'm gonna pull out the pen when I get change at Walmart. Instead of them looking at the bills, I'm gonna look at the bills.

### ⭐⭐⭐⭐⭐ Best counterfeit pens
*by J***M on November 26, 2025*

These are the best counterfeit pens!! Accurate quick simple to do!

## 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)
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**Shop now:** [https://www.desertcart.jp/products/5090455-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in](https://www.desertcart.jp/products/5090455-dri-mark-351b1-counterfeit-bill-detector-marker-pen-made-in)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-14*