cover 1890 (10 Aug.) envelope posted on the day after Heligoland was ceded to Germany, to Homburg and bearing 5pg. (¾d.) bright lilac-carmine and green (II printing) and 25pf. (3d.) lilac-carmine and green cancelled by "HELGOLAND" single ring d.s. with arrival c.d.s. (12/8) on reverse. Possibly philatelic but attractive and unusual. M. 13b, 15. Photo

Details
cover 1890 (10 Aug.) envelope posted on the day after Heligoland was ceded to Germany, to Homburg and bearing 5pg. (¾d.) bright lilac-carmine and green (II printing) and 25pf. (3d.) lilac-carmine and green cancelled by "HELGOLAND" single ring d.s. with arrival c.d.s. (12/8) on reverse. Possibly philatelic but attractive and unusual. M. 13b, 15. Photo