The third stamp in this series is the 25 Mon. This orange stamp was never issued and therefore any stamp claiming to be used has a fake cancellation. The stamp is designated Scott #3 and Minkus #N3. Black and white images are from Baker-Tyler and colour images are from MikeG Canada (Stampboards) and other sources.
These high value stamps were just paper labels when they reached Inchon by 1885.4.5. To reimburse the printing costs, the Korean Government sold the unissued stamps by 2 February 1886 to E. Meyer & Co. (Sechang Yanghaeng) of Chemulpo, which in turn sold them to the stamp trade.
The Catalog Value as shown by Stampworld is 12 Euro for Mint. No Watermark and perforated 8½ to 10: