San Marino Watermark Question

Scott is not helpful on this issue. I have only a few stamps for this country, but I find that Scott 82 from 1923 (50 cent) is shown as having watermark 140, the upright crown. One of my examples is upright, the other is upside down.

Likewise, Scott 519 from 1962 is listed with watermark 337, Triskelion, pointing to the left (when viewed from behind). In my examples, one is pointing to the left, the other to the right.



I am going to make the assumption that it is equally likely for the watermarks to be in either direction due to the printing techniques at the time. Does anyone have a better catalog to support this theory? Thanks.

Scott is terrible about (not) listing inverted or sideways watermarks for most countries. Michel or Sassone would be the catalogs to check for your stamps.

Often, the inverted watermark is not much scarcer than regular, but sometimes there is a substantial difference in rarity and value.

Thank you for the information. I don't have a Michel or Sassone catalog, so I'll just have to table this issue for now.