1994 (09) Medical - RM - Cambridge University Meter Mark (Only 3 exist)!

Exteremely scarce Royal Mail cover with the very, very rare Cambridge University Meter Mark.

Only 3 covers are known to exist - the Meter Mark is the ONLY cancellation on the stamps - no other cancellations were done.

The above explanation is clearly identified and listed as such in the Porter 2006 Meter Mark Catalogue and is Cat £175 !!

Code: 51100