tpack rašė:
Alternatyvinis variants - nusiperki sita "prietaisa" ir benzinu uzpyli

Marked on the inside of the box is "Watermark Detector Directions for Finding Watermarks. Place stamp with face downward so that blank side of stamp is seen. Pour a sufficient amount of benzine to cover the stamp. You will then most likely find that a watermark will appear".
http://cgi.ebay.com/VINTAGE-WATERMARK-D ... dZViewItemJei rimtai, ar kas naudojate skyscius (benzoli ar anglies tetrachlorida) vandens zenklams? Randu daug pasiulymu Clarity Watermark Fluid, Super Safe ir t.t.
Logiskai mastant toliau...
Geriausias pasiulymas ismesti pasto zenkla i siuksliu deze - nereikes sukti galvos koks buvo vandens zenklas.
O jeigu rimtai, tai skaityti cia:
http://www.safepub.com/Catalog/stamps/watermrk.htm