1925, Philatelic Exchange Charity stamp 25k. on 7k. tied by framed 6-line cachet to reverse of registered cover from Moscow, with full contents in french, to Paris with arrival mark, fine (Image)

1932, Philatelic Exchange Chain breaker 15k. on 70k. tied by 8-line cachet to reverse of cover from Moscow, with full contents in french, to Mexiko with arrival markins, a late date for private philatelic correspondence, fine (Image)