Anon, where did you get that pic? It looks like a WWII Red Cross package sent to Allied prisoners in Germany. Has what looks like a British? name, “Dexter” wriiten in pencil on it. It also sent from a Britsh affiliate of the Red Cross by the name of the Order of St. John (hence the cross) c/o the Kriegsgefangenen (German military post office).
It must be from a WWII museum.
The cross is the Order of St. John.