China, Hong Kong, Japan and Other Asia Stamps and Postal History

Japanese Occupation of North China, 1942, half value surcharge on SYS Dah Tung unwatermarked, 4¢/8¢-$10/$20, complete set of 8 in blocks of 4, o.g.,mostly never hinged, $1/$2 and $5/$10 with margins; small rub on $5/$10, Fine to Very Fine.
Scott 8N17-24.
Estimate HK$ 5,000 - 7,500.