1932 3c on $3p green, bottom sheet margin vertical pair imperf. horizontally, canceled "Quetzaltenango 8 Aug. 1932" and used with additional 1c adhesive on piece, v.f., written up in June 2020 Guatemalan philatelic journal "El Quetzal" where it is described as a unique pair used on piece! (unused cat. $900) (Cat No. C21b) (Image)

Est.$500