Quote:
Looks like a 95a (11.5 X 12). I appreciate the help. It is easy to check perfect stamps! It sure gets harder with ones like this (and using the wrong technique)...
All is not lost, there is a way to marry the two
This relies on your application and determination.
as you say measuring a perfect stamp is easy.
So, get a modern perfect stamp and be prepared to destroy it
Find one that measure 11.5 (easy) turn it over and mark in ink 11.5
with an arrow to that side.
There you have a "Template"
Keep it in a stamp mount in a little box of similar perf sizes
Matching up perfs with as bad as your stamp, then is easy to determine
in seconds.
Only works on perfect sizes per 12, perf 11.5 etc,
but it does immediately point to a perf size that is out of the ordinary.
Build a set of perf "templates"
This is perfectly subject to "pin perfed stamps of say Turkey India etc,
where stamps sides can show only a few perf tips
These "templates" work wonders !Also, if you are looking for a scarce Perf guaging, amongst a plethora of same designed stamps (Brazil, Argentina, Australia) these "templates" are a Godsend