AO-4083-1, 2006, Baseball Sluggers, Mickey Mantle, FDC, Add-on Cachet. Digital Color Postmark, SC 4083
Add-on cachet is:
A cachet design added to a
cover which was originally uncacheted. An add-on cachet should be
identified
by maker and date (mine are stamped on the back with the date) so that it is clear that it is not
contemporary with the cover.