Okay, I just called my 'Smith, because he LOVES IT
when I call with an obscure question during dinner.... LOL
The weapon in the shop is an Winchester Model 1890. I am going to include a picture. According to Brett, the pump action .22, like this Winchester, was the 10/22 of the day. Savage made a variant, Winchester made a variant and Remington made a variant, all of which are pretty similiar.
Apparently all the companies produced an octagonal bore version, which was the "Target" version and a carbine, or short barreled field gun version.
There were also "knock off" versions of the weapon produced outside of the normal production houses that bore no real production markings other than a family name.
On a tip from Brett, it turns out that Taurus Firearms
, is currently producing a replica of the Winchester model that is very similiar to the original.
I am afraid this isn't the weapon that you are looking for. I wish you the best of luck in your search.