Was This Ve Day Commemorative Cover Mass-Produced?

I purchased this cover commemorating VE Day (on May 8, 1945). I love having the "Overrun Countries" stamps – one of my favorite U.S. issues in terms of richness and composition – transformed from a tale of tragedy into a story of triumph, especially when paired with the U.N. stamp.

While not relevant to my appreciation of this cover, I would be interested to know if this was a mass-produced souvenir or a philatelist's personal project. Anyone know?

I cannot answer your question, but you might find the earlier discussion interesting

https://goscf.com/t/34220

I think the chances of it being mass produced are about 99.99 percent in favor if it being mass produced. There would be very little likelihood of an individual collector going to the trouble of having just one envelope pre-printed that that. Remember that modern desktop printing is only several years old now and back in the day you needed a printing press or to go to a company that had a printing press to have covers printed up like that. And if you are having one envelope printed, after the cost of setting up the typeface and the putting ink in the printing press a second and third and hundredth and thousandth etc. would cost almost nothing more to make so many would have been printed. This would have been made by a dealer who was making many to sell, or a dealer who may have also been a collector on the side making a quantity of these to sell and maybe keep one or two in their personal collection - it amounts to the same thing. There were a great many dealers and cachet makers who were in business at this time and all of them were cranking out large quantities of such first day covers - some of them with fancy cachets are quite artistic and beautiful. This one is on the plain side, but it does have nice cancellations on the stamps.