See: http://www.gun-data.com/tour7.html this may help you.
No published sn data
One recently sold for $101 in online auction.
You are able to fire .22 Long Rifle or .22 shorts.
No published sn data that I know of.
No published sn data.
No sn data available.
No published history
You will have to check with the BATFE
25-100
No available sn data in the public domain.
The Revelation Revolver Model 99 was produced in the late 1960s to early 1970s. It was manufactured by the H&R (Harrington & Richardson) company for the Montgomery Ward department store under the Revelation brand. The specific production years can vary slightly, but it generally falls within that timeframe.
No open market published data.