Many years ago (I bet over 20) Pedersoli did manufacture a few locks engraved with Fred on the lockplate. At the time, I had no idea what/why it was there. I was just beginning to get involved in muzzleloading and I was more interested in the Hawken rifles and that time period. These Fredericksburg locks were installed in their Brown Bess. I was told that they were a limited run, but I don't know how many were made. They were sold by and featured in Track of the Wolf. They are no longer available. I even contacted Pedersoli to see if they would be willing to do a run. It had to be orchestrated through one of their importers. Cost prohibitive for what you get. I thought it would be nice to have one, since I live in Fredericksburg, VA. It's not going to happen.
Instead, I went ahead and purchased a Militia Musket from ERA and am completely satisfied with that decision. Now I have a generic musket that will pass muster for a Rev weapon.
Patriot
I suspect it was over 30 years ago and were avaliable for a few years. Quite possibly they only made the one run. They featured a walnut stock and the flat faced lock. I can't remember for sure but seem to believe they lacked the forearm swell. There may have been some other small detail changes too but honestly they were too expensive for me to have taken a really detailed look. Had the price been in line with the Bess & Charleyville they might have stayed on the market.