M100504a
The typical Sèvres/Vincennes form, but with an upside-down-"V" and set 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. In the case shown here, someone tried and failed to impersonate a mark used by the French Sèvres/Vincennes factory.
M100504a
The typical Sèvres/Vincennes form, but with an upside-down-"V" and set above "AUSTRIA".