Niederlander
Why . . . YES there are. I don't necessarily know what they are. I also don't care. There are collectors out there just frothing at the mouth for "ALL USA" built USFA. The guns built by USPFA as well as the early USFA (same company) from Uberti sourced parts are every bit as good as the "All USA."
I don't collect anything. Have never been excited about High End SA guns. However, if presented with a USPFA or USFA, at a competitive price, I might buy one. Probably not though. I would be better served by a nice stainless set of Great Western II by Pietta.
Play Safe Out There