Welcome to the Lugerforum from a fellow Virginian!
This gun is definitely in the shooter class. It has been recently rebarreled by a gunsmith and reblued over what was once severe pitting... In it's current condition it has little or no collector value, but should provide you with years of enjoyment shooting it. You got it for GREAT price.
The grips are likely to be from Jay Scott manufacturing that used to make a lot of "fancy" grips for various pistols...
It is likely to be 9mm... IF a 9mm empty casing will chamber then it is... if it won't chamber then it's most probably a .30 caliber. A six inch barrel is great for shooting because of the extended sight radius.
Clean it thoroughly and keep it properly lubricated and go have some fun...
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