Originally Posted by
ccdjg
Unfortunately I do not know who MT of London was, but I do recall this gun doing the rounds in the mid 1980's when it was eventally offered to me for sale for £1000 in the early 1990's. That was way behind my means at the time so I had to pass, much to my regret. The pistol was then bought by David Swan, who had the case made up for it.
I have a strong suspicion that the pistol may have come originally from the collection of Joe Gilbart, which was auctioned in London in 1982. I was not there unfortunately, and in fact I had not started seriously collecting air pistols then. The auction listing described one lot as "An Eisenwerke EG, s. no. 570, and a brass gallery pistol". Amazingly this bundle sold for the magnificent sum of £25. So if this "brass gallery pistol" was the Wirsing, it was going to have quite a mark-up over the next 30 or so years.
Joe had quite an interest in the early American spring air pistols, so he could have bought it from the USA. The person to ask would be John Atkins, who knew Joe personally, and he covered the original auction in one of his very early Airgun World articles.