1937 Siam 15 stg stationery cover from Vientiane to Chowan, uprated
by Rama VII 3stg + 2 stg on reverse. Applied with Nongkai
1937 Siam 15 stg stationery cover from Vientiane to Chowan, uprated
by Rama VII 3stg + 2 stg on reverse. Applied with Nongkai Qiaopiju
vertical seal. Adhesive tied by Nongkai (16 Dec) transit cds.
Further transit Bangkok with Qiaopiju oval seal. Qiaopi from other
Thai PO to Bangkok 8 PO was charged with 15 stg while hand carry to
Bangkok 8 would be charged with extra 5 stg.
1937年暹羅15士打郵資封自萬象寄潮安，背加貼拉瑪七世3士打 + 2士打。鈐“農開陳益發信局”直戳。貼票銷
農開12.16日戳。另鈐“暹羅黃潮興信局批印”直戳。由暹羅各地寄曼谷8局之僑批收取15士打，但若自攜至曼
谷8局則需加收5士打。稀罕少見之老撾僑批。許茂春著《東南亞華人與僑批》第140頁2-99原件。
