Auction UPA 97

2p 50c brown postal stationery notification envelope (H&G NB1) with 'CORREOS NACIONALES SERVICIO INTERIOR' overprint in black (Guatemala Handbook Type F) with the form number overprinted at lower left. A fine used example with GUATEMALA CITY machine cancel dated OCT 10 1931. Addressed locally within GUATEMALA CITY. A scarce type. (image available) {U} [US4] (Start Price / Minimum Bid = £28.00)