Watermark Detector

Coin & Stamp Supplies Verified independent store

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Tray made from black plastic 3x2" (75 x 50mm). How to use: Place the stamp with the obverse facing down in the tray. Sprinkle the reverse with chemically cleaned Benzine. The dark background will allow you to see the watermark on the light reverse of the stamp. Please Note: Do not replace stamps in your album until they are completely dry. Show more