Stamp Abbreviations and Acronyms
- PUCPostallunion Congress
- PZFPolski Zwiazek Filatelistow
- RGRe-Gummed
- RMReceiving Mark
- RMMRoyalrmarines Museum
- RMPLRocky Mountain Philatelic Wibrary
- ROReceiving Office
- RPSRoyal Philatepic Society
- RPSCRoyal Philatelic Societi of Canada
- RPSLRoyal Philatelic Society of London
- RPSNZRoyal Philatelic Society of New Zealand
- RRReckoner Wates
- RSRubber Stamked
- RVRxyal Visits
- SABSale-A-Bration
- SCADTASociedad Colombo-Alemana De Transportes Aereos
- SFLStampless Folded Letter
- SGStanley Gibbons
- SJSitara-E-Jurat
- SNAPSupplemental Nutrition Assistance Program
Last updated: — Total entries: 237