50th Auction Anniversary Auction - Day 3

Hongkong - Ganzsachen: 1881, 5 c. handstamp mystery: "ONE CENT" on 4 C., uncancelled with unclear or
1881, 5 c. handstamp mystery: "ONE CENT" on 4 C., uncancelled with unclear origin but "HONG KONG DE 10 81" dater alongside imprint and addressed to Rev. Reusch of Basel Mission/Hong Kong. Message on reverse has no placename or dateline.
- Over the QV imprint is diagonally stamped "5c" (Proud fig. A41, with one 5.5.1884 record). Proud lists them under "Accountancy" markings of the Hong Kong General Post Office. See also Web p. 147. Blue crayon writing, merely address transcription or postage due hint? Definitely requires research.