Stamps

MUH-mint unhinged,unmounted mint, mint never hinged

MLH-mint lightly hinged

GU/FU/VFU-good used, hine used and very fine used

Wmk-watermark Env-envelope Selv-selvedge Opt-overprinted

SP-specimen OS-official service or official use

FDC-first day cover  PNC-philatelic numismatic covers

FV-face value CV-Catalogue value