I saw the tatty (but still very probably working) remains of a Mk1/1 Sten in Bosnia with some fairly tatty but sort-of presentable Thompson guns and a few other odds and sods that we brought back. One of the US Intelligence blokes said that the hidden cache was a wartime SOE shipment and had been stored reasonably (?) well. Quite what a Sten gun was doing there, shipped THAT late in the war when there were plenty of Mk2's and 3's is a bit of a mystery (that I sort-of don't subscribe to but there you go) but he said it was because they had plenty of 9mm ammo.
I had it brought back together with a few new PKM's but just kept the Mk1/1 specific stuff. If I knew you then, you could have had it BP...., do dewat of course.