There are no new parts, all are NOS. This means that plans of making it water proof again are a bad idea. Fix it up for careful, casual use. So, only change what you have to change. If the crown looks fine, reuse it. Same with the stem. Crystals can be polished and will look excellent...
Take the back off and see if the movement has (3?) rubber rings being used as isolation mounts:
Again, AFAIK, that's an OPS only feature. If not, I'd say it is an Ultradive with an OPS dial.
To my eye, you can see some of the remains of the coating on the crowns. Could be trick of the light though. If it's not there, it could be an ultra-dive with an OPS dial. One way to check would be to look inside and see if the movement is rubber isolated (see horology-B's repair video)...
Can't comment on the finish as the photos are not in HD. Never seen a Diver (compressor case) with no/zero/ziltch markings. No minute markings, no "Ultrasonic", etc. It looks like a "Sherpa" dial that has had all its finish removed.
It looks like a Sherpa (non-date) model. I agree with Slim that the dial has had its details (finish/paint/markings) removed. Might be able to find a replacement dial. They are very good watches with bayonet case back and excellent movements. I have several myself.
Enicar made a LOT of watches. The ones the collectors are after are the tool watches (dive, chronograph, 24hr, etc) from the 50, 60s and 70s. All the other watches are well made and excellent timepieces but not particularly valuable.