Does the "good" Amber mark fade or is it permanent? Thanks for your help.

You put a small "x" on the bill with the pen. If the "x" is a golden yellow color it is authentic and the "x" should fade. If it's counterfeit the "x" will stay black..hope that helps.

can this pen detect a foreign country currency

You didn’t say what country. I believe foreign currency banknotes (cash) are not all the same, so that would be a fat no.

Some deliveries may take a little longer than usual due to regional shipping conditions.

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Counterfeit Money Detector Pen

Product ID: 339095731

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💵Works on all US bills (1959+)

🖊️Instant chemical reaction

🇺🇸Made in the USA, 100% recycled

Description

🖊️ Spot the fake before it’s too late—because your business deserves the real deal.

COMPACT LIGHTWEIGHT - Sleek pen design (8 x 1.65 x 19.05 cm, 9g) fits perfectly in your professional toolkit.
TRUSTED INDUSTRY STANDARD - The original and only pen of its kind, trusted by retail and business pros nationwide.
INSTANT AUTHENTICITY CHECK - Mark bills and get immediate verification with chemically sensitive ink.
ECO CONSCIOUS CRAFTSMANSHIP - Made in the USA with 100% recycled materials—smart and sustainable.
UNIVERSAL CURRENCY COMPATIBILITY - Reliable on all new design US currency from 1959 onward.

The Dri Mark Counterfeit Money Detector Pen offers instant, reliable verification of US currency using a chemically sensitive ink that marks genuine bills amber and flags suspicious ones dark brown or black. Compatible with all US bills from 1959 onward, this compact, eco-friendly pen is proudly made in the USA and trusted by professionals to safeguard transactions.

Specifications

Manufacturer	DRI-MARK PRODUCTS
Brand	Dri Mark
Model number	DRI351B1
Product Dimensions	8 x 1.65 x 19.05 cm; 9 g
Color	Black
Total Recycled Content Percentage	100
Number of Items	1
Manufacturer Part Number	DRI351B1
Item Weight	9 g

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