Pin did not originate on a card. Edition size: Presumed 24 or less made. From a large private collection, has been in smoke-free, climate controlled environment. According to Pinpics: An Artist Proof pin, or AP pin, is a pin that is used to verify details of a pin before it is released to the public.
Generally, 24 AP pins will be created for each pin produced. If a pin is of a lower edition size, the number of AP pins made may be lower.