This unusual cover is a First Day of Issue for Great Britain's set of 4 1974 Christmas stamps, issued November 27, 1974. The cachet on this cover may be the most unusual one you'll ever find! The cachet is a "woven picture" from Copecrest of Royal Oak, Michigan. The cachet is a small tapestry, inspired by a company owned by Thomas Stevens in Coventry, England that produced beautiful works of art in tapestry. That company operated from 1854 until it was destroyed by German bombing raids in 1940. The text on the back says that the cachet offered here was inspired by the "picture weaving" used by Thomas Stevens.

This fresh, unaddressed space cover with its woven cachet would make a great (and unusual) addition to any FDC collection.  Check the scans for details.