There seems to be quite a few forgeries of the State Dept Dollar values, the more dangerous of them seem to be the "Snef" facsimiles, produced in Gremany around the turn of the last century which appear as engraved stamps. Actually quite well made, forutnatly they were overprinted in black with"Facsimile between the arch of Department of and State, as your forgerys are. There are others, probably a later "issue" of the Snef facsimiles that are also overprinted in purple across the lower part of the vignette. I have one of the orignal Snefs that had the overprint scraped off and a fake cancel applied over it and three of the later issue with both overprints. I am not sure that the second op wasn't applied later.

