WWI .455 cal. S&W revolver question.....

[Patrick Chadwick]

It was converted to .45 Colt, yes?

Or .45 Auto-Rim/.45 ACP with moonclips ? The Auto-Rim/ACP conversions were done for the civilian market, i.e. post-service.
I cannot say what values are where you live, but a conversion generally spoils collector value. What you have appears to be a very nice example, with honest wear on the bluing were one would expect it. For me, that would be a keeper to enjoy shooting with easily available ammo/reloading components. While, of course, looking out for a .455!

Patrick