The year 2014 marked the 50th anniversary of the first year of operation of the Germany & Colonies Philatelic Society following the amalgamation of the Germany & Colonies Stamp Club (established 1947) and the Stockton German Study Group (1960).
The G&CPS celebrated its inaugural year in 1964 with the first Germania Posta philatelic exhibition held in Stockton.
I am trying to get information on this sonderstempel
it reads Potsdam 22-25 June 1939. I find that Potsdam held a Gautag der NSDAP in Potsdam, is this one and the same thing?
Thank you
