Joe:
First of all, welcome to the forum. You will find lots of folks willing to help here.
You are wise to ask before you buy because there are a LOT of misrepresented slot machines on eBay.
The machine you are looking at is a very late model machine. I would guess it is from the early 60s. I think, but I am not positive, that the machine you are looking at was actually built by a company by the name of Sega which was a Japanese company.
There is no way it is from the 40s like the seller states.
In addition, from looking at the photo is appears the machine has a fake jackpot. That is, the coins in the middle jackpot will never dump. They are only for display.
The starting bid of $1,199 plus $200 shipping seems high to me. You could get a nice restored Castle Front for about the same amount.
Here are photos of the machine you are asking about in case anyone else in the forum wants to chime in.