Revelation was a store brand used by Western Auto. Many companies made guns for them under that name. Can't tell you more without more info from you.
It is a dual action revolver
You take it to someone who specializes in them.
Yes their a good single action revolver
1873 was the date of the first one.
depends on the model revolver. single action just in front of trigger guard............ modern revolver bottom of butt............
1927
1895
1962
1873
about 1883
10-100 usd
less than 100 $