Jtplumb,
I don't believe that is a Vorrat mark, rather, I believe it is a similar British mark. A Vorrat mark typically would have only been applied once and on the top of the barrels (near the doll's head). My speculation is, rather than a GI bring back, it may have been a "Tommy" bring back and sleeved in the UK, hence the marks. The color case, bluing and choke tubes may have been done in either the UK or US, but I think the US because the barrel flats are left black. Germans, for sure, and Brits maybe would have polished them bright. I'm also not sure how popular choke tubes are in the UK. I believe Meffert made their own actions (maybe Lindner got theirs from Meffert). I agree about the lack of collector interest but don't agree it is a poor gun. You will likely have many years of fine use and enjoyment from it. When you have the barrels refinished, I suggest you have the color removed from the flats. Then, a close inspection may reveal the residue of the original proof marks (maybe including the date of proof).
Mike
