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 have found on postcard from Germany to Tsingtau
(1904) a cancel of Marine bureau post.
What was the use of this cancel ?And what was
the marine bureau post ?