Hi Val,
I see that most other posters are urging you to shoot it.
If it was my pistol I would keep it as a collector. Val and Navy Arms have not been around for decades and that GU is truly a collectors item, and I truly believe that it would be worth more if no more firings happened with that pistol. It appears to be a Third Model 1851 Navy except it has a plain cylinder, which is not historically correct but may be a collectible item insofar as repros.
The collector's market for pistols of this genre may not appear soon, but it will, and maybe after we are dead and gone.
If you want to shoot a repro 1851 Navy .36, buy a Pietta from Cabela's, and keep the GU as a safe queen, please, or sell it to me.
Jim