POLAND 1919 50f green SG110 used FG Northern Poland Issues c ##W25
FG – F ullG um. SG – S tanleyG ibbons Catalogue number. NG – N oG um. MNH – M intN everH inged. CV – C atalogueV alue. CTO – C ancelled-T o-O rder. Full transparency – if you are not sure about anything.