Yes, more than you think. The gears will fit the 1939 box. And they're better than the 1932 to 1937 (ish) gears.
I would keep them as spares if you don't find a bunch of $ for it.
Karl
Sold a set of very good innards for 39 trans for $100. I'd say easiest is to sell out the gears and chunk the case to save on postage. I'd give you $100 plus postage
I’d have to look at how much of a task it would be to disassemble the transmission.
Well, in that case, forget about it ‘cause you’d surely get grease under your fingernails.
I, for one, think that transmission would be worth more as a complete unit rather than a pile of parts. It's a most likely a known good unit and probably cleaned up. Given the O/P's location, I would think the chance of a local (or regional) sale would be good.
In my opinion, the offer made was quite self-serving.
Any idea on a reasonable asking price if selling it complete
The side shift transmissions remained in production from 1940 through 1948 so there are likely folks looking for them. If gears are good with emphasis on the input & cluster set and first/reverse then it has a lot of value there. Those cases are rarer than top shift types. I'd figure minimum of $250 with more for good gears. Start high and let it ride till you decide to let it go for less. Shipping on stuff like that requires a crate so figure that in. It ain't cheap to ship stuff these days. Heavy stuff generally has to go less than a truck load truck freight. You might get lucky on Craigslist but you just never know. It always depends on local population numbers.