The most common perforation is comb 13 1/2, but the range is 13 1/2-17, and can be found compound perforation too. 1854-11-01-1856-11-01 the watermark is JR Nro 41a in two different types 1856-11-01-1858-11-01 the watermark is S.AE.F in two different types
The watermark is a sheet watermark. Most stamps will not show any watermark, while a few will only show small parts of the watermark illustrated.
The most common perforation is comb 13 1/2, but the range is 13 1/2-17, and can be found compound perforation too. 1854-11-01-1856-11-01 the watermark is JR Nro 41a in two different types 1856-11-01-1858-11-01 the watermark is S.AE.F in two different types
The watermark is a sheet watermark. Most stamps will not show any watermark, while a few will only show small parts of the watermark illustrated.