RUSSIA - Express Mail. 1937 (3 June), pig farming advertising cover from Bryansk, sent by "SPESHNAYA POCHTA" (Express Mail) to Moscow franked with 1k+5k+15k Chelyuskin issue stamps alongside S.P. label. On reverse 20+40k definitive stamps. Nice and attractive thematic cover. (Photo). Est. 150 - 250 CHF.