1921 San Jose to Managua FFC, two examples, each with diff. coloured semi-official stamp + 5c Fernandez tied at San Jose (ABR 12 1921 cds tying both), the plane actually reached only to Puerto Limon, each with usual vert. fold, else fine and scarce (AAMC 1; Mü. 1, 3500pts each) (Image)

1936 Zeppelin Hindenburg 1st North America Return Flight, MIXED FRANKING with 2Col tied May 1 for postage to USA, and 43c USA also tied in Costa Rica for the rest of the flight (to England), Brownsville, TX transit (May 3) and Frankfurt a/M pictorial bs (May 14), few toned perfs else dramatic and uncommon cover (Sieger 409 L, € 1’200) (Image)