|
The coated papers have always been problematic for various reasons. One - the coating it self being an obstacle in seeing the structure of the wire and the design of the watermark, two - not always having the certainty that the paper had been coated. The old philatelist tool - the silver coin that is leaving black traces on chalky paper - may seem to work but is also a destructive method diminishing the value of the stamp. I would prefer not to use it at all. Paper can get a more smooth surface by calandering - rubbing the paper by means of cylinders and thus improving the printing quality of the surface. This is called satinado in Spanish and there is no applying of an extra layer or coating involved... Applying an extra layer usually gets done apart from the very paper making itself. It can be done much later in a completely different environment. The Argentina stamp papers with a coating that had been used for the P&R I series have all been made abroad - so only the imported papers will have it. Since 1963 the papers made by the Zárate paper mills got coated and this had been done by a specialized firm elsewhere in Argentina! |
| ... Pettigiani recognizes 4 groups of
coated paper:
J - a combination of 3 [?] types of imported paper that all have an orthogonal watermark but cannot always be split up or assigned to a particular subtype. For collectors who may get frustrated the overall "J" has been defined. K - rayado vertical of English origin like the uncoated type of paper! But coated now! L - Tela, also of English origin like the uncoated type of paper! But coated now! M - Delgado, the very thin paper that was thought to be impossible! Also of English origin. |