You will need the services of a gunsmith.
$100 to $250 depinding on the condition..
gatlin
$800 to $900
The owl's head was an Iver Johnson trademark. The model 1900 was made from 1900 to 1947.
With the serial number that you have provided,your Octagon barreled Winchester model 1894 rifle was made in the year 1900.
I believe if the top on your H&A revolver barrel says: 'mfg' it is a pre-1898 and if it says 'arms' it is a post 1900..................................................that might help with dating.....
I received a similar rifle from my grandfather. He had a letter from Remington stating the rifle was manufactured between 1900 - 1907, if I remember correctly.
A Lver Johnson model 1900 22 revolver gun can be worth $115 dollar or up. It all depends on the shape it is in.
model 1900 fitchburg mass usa A38473
They price at $75 to $125. If your gunÊdoes not have a letter code prefix to the serial number found on the left side of the grip frame under the grip panel it was manufactured for black powder cartridge pressures and is not considered safe with modern ammo.
No known sn data published. Probably early 1900's
when did the make the smithsonian double barrel shotgun