Thank you very much for placing the photographs
It is absolutely original, it has no parts replaced ... I have enough experience in detecting tampering.
Excuse me for not putting a full number image in front of the frame, and under the barrel (it is for privacy requested by the owner)
But they are original, same typeface, ect …
Could it be a commercial Navy exported to Uruguay?
look
https://www.morphyauctions.com/james...h-stock-36157/
https://www.collectorebooks.com/jame...uger/36157.htm