Thank you for your compliments regarding my display Fernando.
I snaped a few pictures of my rattail to show possible makers marks. They are very hard to make out though. There seems to be one in the same place on the barrel as yours, but it is very hard to see. There also seems to be one on the lock. I know very little about pistols and hope I can learn more on this forum.
I'm not sure if this is a purely decorative motif or some kind of symbols??