Yes Gary, I have owned 5 with the 25 marking and all had white or red crayon so I would say it has to do with that. It could meAn 25 is a country or possibly a refurb factory.Any one have one with the /25\ mark, AND a ordinarily seen refurb mark? My thought is that these are from a refurb facility. The /25\ mark being their stamp of approval. Most I have had, and the 1940 Izhevesk I have now, seem to be in nicer shape than most, and no other refurb marks.