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Black counterfeit detector pen for U.S. currency

Dri-Mark

Dri-Mark 351R1 Counterfeit Bill Detector Pen, Black

SKU CH-Y4TR-44ANW MPN 351R1

A pen that instantly reveals counterfeit U.S. currency with a colour-changing mark on series 1959 and later bills

  • Product typeCash Bags
  • Key featuresCounterfeit Bill Detector Pen
  • Product colorBlack
  • Instant verification with chemically sensitive ink
  • Amber mark confirms genuine U.S. currency
  • Dark mark identifies suspected counterfeit bills
  • Works on all series 1959 and later notes
  • Pack of twelve pens for high-volume use

Counterfeit Detection Pen

The Dri-Mark 351R1 is a single black pen that uses chemically sensitive ink to test United States currency. A light amber mark confirms a genuine note, while a dark brown or black mark indicates a suspected counterfeit. It works on all series 1959 and later bills. Retail staff and cash handlers can verify notes in seconds at the point of sale.

Users Needing Instant Verification

Cashiers, market traders and small-business owners who need a low-cost, no-power method to check bills at the counter will find this suitable. It is not for operations that require automated counting, batch scanning or detection of sophisticated forgeries beyond the ink reaction. High-volume environments needing machine-speed authentication should look elsewhere.

Chemical Ink Reaction Test

The sole deciding specification is the ink’s colour change on U.S. currency paper. An amber mark means pass; a dark brown or black mark means fail. No batteries, calibration or software are involved. If your workflow depends on a different verification technology, this pen will not meet that requirement.

How it compares

Measured against everything we stock in Register Drawers & Lock Boxes, at today’s prices. Recalculated every night.

Price $49.99
Cheaper than about 58% of the 180 comparable items (median $63.49).

Specifications

Product
Brand nameDri-Mark
Model name351R-1
Product typeCash Bags
Product colorBlack
Size & build
Shipping weight0.14 kg
Package size140 × 76 × 25 mm

Questions about this item

How many pens are included in the dozen pack?

The product is sold as a dozen, providing twelve individual counterfeit detector pens per package.

Does the pen require batteries or an external power source to operate?

No, the pen uses chemically sensitive ink that reacts instantly when marking a bill, so no batteries or power connection are needed.

Which U.S. currency series does the detector pen support?

The pen works on all new design U.S. currency from series 1959 and later, covering decades of issued bills.

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