M051205a
Interlocking initials "V" and "A" above "AUSTRIA".
This entry belongs to a specific group of marks that all share certain criteria. They have never been definitively identified and they all use the same font. Some have already been proven to be marks used on reproductions, so this mark must be treated with care. Some people generally assume that all marks in this group are fake. The initials in this example are said to stand for "Vienna, Austria".
M051205a
Interlocking initials "V" and "A" above "AUSTRIA".
M051205b
The much rarer version which does not include "AUSTRIA".