Without more detailed info on configuration, condition, etc. it's impossible to come up with a figure that'd be anywhere close to "correct".
For most common firearms, year of manufacture doesn't signify much. "Pre-'64" carries some weight in Winchester circles as changes in their manufacturing processes for cost cutting after then are seen as being responsible for lower overall quality.
There are so many variations in '94s that can make an extreme difference in collector value. The one constant that makes for the biggest difference in price is condition.
On an especially rare or desirable specimen, a difference of as little as a couple of percentage points overall can make a very substantial change in what it would potentially bring from an avid collector. Non-factory alterations to finish or configuration can pretty much eliminate its value to a collector altogether.
On common models it's less marked unless it's something that detracts from the practical usefulness, like a well-worn or pitted bore/chamber.
Assuming that yours is a standard production model, the caliber is likely to be something of an issue. Most folks looking at a used levergun want one for a working tool, and while the .32 Winchester Spl. is an adequate deer/medium game cartridge factory ammo is a lot less commonly available today than .30-30. AFAIK, only Winchester and Federal still list .32 Win. Spl. ammo in their catalogs. Being able to walk into your local retailer and finding it on the shelf might be "iffy", whereas .30-30 can be had nearly anywhere. There'll be a good many folks who won't even consider a rifle in an "obsolete" chambering, and more who'll expect a large discount on the price for having to go to the trouble of looking for cartridges.
