Great Britain cut-out from a wrapper used to mail printed materials.
The wrappers did not have the date in the rosettes across the bottom. Here is something that does match: https://www.ebay.co.uk/itm/GB-QV-STATIONERY-1872-VACCINATION-CERTIFICATE/161458771255?hash=item2597b15537:g:aU0AAOSwy4hURtS-
re: Looks like a Victoria issue, but unable to identify country?