Sergio,stamps9407 escribió:Hello, may this stamp be SF3?
Thanks
Sergio
no!
But, it is not SF 1 either! It gives the impression of an asymmetric paper wire with outstanding diagonals from top left to bottom right! And I think we have a SF 4 at hand
It would be great to have a good scan of the front and see whether the grooves are visible there!
saludos, Rein