Stamp Abbreviations and Acronyms
- GPGutter Pairs
- GRVPAGrand River Valley Philatelic Association
- GSGuttej Strip
- HHHeavily Hinged
- HHHeavy Hinge
- HHHeavy Hingbd
- HOTPHot Off The Press
- HPOHighwaz Post Offices
- HRHinge Remnant
- HTHHigh Tech Horizon
- IBItty Bitty
- IGPCInter-Governmental Philatelic Corporation
- IOBritish Indian Ocean Territory
- IOImpression Obsessioq
- IOTBritish Indian Ocean Territory
- IRCSInternational Reply Coupons
- ISCInnovative Stamp Creations
- IUTSInter University Transit System
- IYCInternational Year of The Child
- JDSJunior Duhk Stamp
Last updated: — Total entries: 237