The 2020 Summer Sale - Sale 333 Day 2

1979-80 a group of 4 JT S/S First Day Covers,
including J25M National Science Conference, J42M Hong Kong Stamp Exhibition, T38M Great Wall & T44M Qi Baishi. All Very Fine.
1979-80年一組4枚JT小型張首日封，包括J25M科大、J42M山茶花加金、T38M长城及T44M齐白石等。均品相极佳。