Red 333

That looks like it may be an adirondack spruce top. Nice. And the banner and script logo (and presumably strip tuners) are certainly early forties style features. The bridge is a late fifties style, so this guitar has an amalgam of features, like the True Vintage line, and isn't meant to be a reissue of a particular year; Gibson actually didn't do that (accurately) until the late 2000s and the Legend series, so in that respect, it's like a lot of  J-45s in that it's different from all the other J-45s, lol. I think any guitar with an adi top is likely a step-up tone-wise over one with sitka, so I'd chance it if I were you. 

Hi, Techref.

Fuller's has has Gibson build a bunch of different J-45s over the years; some with adi tops when that wasn't common, some fully torrified, some that represented specific eras, etc., so it's a bit of a mystery to me what the one you're looking at is; the sound hole lable doesn't give me much of a idea without having Fuller's spec sheets. The only clue I see is the the back braces seem thin and squared off, and I remember Fuller's had a run of Legends like that, so perhaps this is a model that they specified a 40s style bracing. If you had other photos, maybe we could suss something else out. I can tell that as a rule of thumb, the guitars made for Fuller's tend to be very well made, and have a unique feature or two that distinguishes them from similar models. Sometimes, these make their way onto models offered to other or all dealers later.  The Fuller's folks are very nice in my experience. Maybe if you call them they can tell you something about what, if anything, distinguishes that J-45 from today's Standard or the Standard being made when the Fuller's guitar was offered.

Best of luck.