Was given this little cover at our club auction a few weeks ago. It looked like it needed a home. A registered letter postmarked in Okucani in Slovenia (now part of Croatia) in June of 1920 sent to Brantford Ontario Canada, back cancelled in London Ont. on June 24th. A little worse for wear, it originally had at least seven 50f Allegory of Freedom stamps (SC#3L18) on the back (looks like six, but there are small traces of a seventh in the bottom right corner).