Not really the first year of G-37s... Hans mentions '72 (and there's a '72 on GBase). Very similar to my '74, and I'd expect the same mellow tone and clarity. In fact, I just checked the SN... it corresponds to '74, a bit YOUNGER than mine.
Does look like she's in pretty decent shape. Hard to see the saddle, but looks like there's some room (ask questions about action and relief before bidding!). One of the tuning machines is non-original... noted in auction (if anyone here goes for this, I have a spare set of tuning machines to bring it back to original... a couple are slightly pitted, but one should be in decent enough shape).
Could be a nice one at a good price (under $600 would be a very good deal, IMO).
D