1912 Siam Differences Between Vienna And London Print.

I do not have a catalogue of Siam/Thailand so I went onto the internet to find out about the differences between the 1912 print of Vienna and the later London print. Best desciption I found was: There a subtile differences. Not very helpful. Is there a list/website of differences/pictures that one can use as a guide and were can I find it. Thank you for your help. Kind regards, Johan.

As much as I understood, the 1912 issue (12 stamps) produced by the Imperial Printing Works (Vienna) Perforation is 14 1/2,
and the 1917 issue by Waterlow & Sons (London) Perforation exactly 14.
http://bigblue1840-1940.blogspot.co...nd-siam.html

Johan

From SG:

In addition to differing from the Vienna print in perforation, the 2s and 4s may be distinguished by the four clear lines on the chin in place of indistinct shading, and a white line between the shading of the collar and background at right. In the baht values, there are nine beads in the section of the inner frame below the criwn, immediately above the King's head, instead of only seven in the Vienna printing. The cross-bar of the "H" of "BAHT" is very slightly above the centre of the letter in the London printing, but markedly so in the Vienna printing.

Good luck!

Geoff

Thank you Aurora an GeoffHa. With your help it became a lot easier. final result: 7 Vienna(including the 6 baht values) and 4 London. A complete Vienna is in reach, London may take me a bit longer. Kind regards, Johan.