Auction #14 of China, Hong Kong, Japan and Other Asia Stamps and Postal History

Mongolia, 1928 (Jan. 17), registered red band cover from Ulanbator to Peking via Kalgan, franked by 5m and 20m Mongolian issues, with a third stamp missing, tied by Ulanbator1.17 c.d.s. and matching registered handstamp. Cover also shows Peking Feb 2 transit, with pair of 2017 blue Peking printing postage dues applied and tied by Kalgan Feb 4 c.d.s.'s. Attractive and scarce usage, Fine to Very Fine.
Estimate HK$ 1,500 - 2,000.