Maybe this is the time to open up the can of worms???
For many years, the only place you could find SVT snipers were from PS Militaria (a dealer I have dealt with many times and whom I trust). The only problem was that all his snipers had export markings on the top receiver "DE 07 UA", but sometimes you need to settle for what you could get.
As a result I purchased two rifles (1941 and 1942 Tula's snipers). Time goes by and I find a 1941 Tula sniper within a crate of rifles, very similar to the rifle pictured in this thread. The nice thing was that it had no export markings. As a result I sold my first 1941 sniper.
Later on, I noticed that my non-export marked Tula sniper had the distinctive "C" marking on several original components. The same "C" marking that you find on 91/30 authentic snipers and on the rifle pictured in this thread. None of the Export marked snipers that I have seen, have these "C" markings.
Question is, are they original snipers???
The tougher question is how to prove it either way. Info and photo's of authentic examples are far and in-between
I do trust Jean and my export marked sniper does look like it was machined during the war.
One explanation:
"that officially sniper SVT's were produced only in Tula (38006 in 1941 and 14220 in 1942). But some number of Izzy and Podolsk (yes, Podolsk, not Kovrov, SVT's never were produced in Kovrov, it's a mistake) rifles were converted to snipers in army workshops during war. If they have lack of sniper rifles, they just take rifles with best accuracy, and add notch for mount fixing to them (because rails were almost at all SVT issued in 1940-1941).
Some of such rifles were found in the ground at battlefields, so they certainly exist.
You could read more here, use Google translation, it's russian forum
http://forum.guns.ru/forummessage/164/959884.html
http://www.warrelics.eu/forum/firearms-ordnance/svt-4-0-sniper-165970-2/"
As per the Kovrov comments, I don't know what to believe?