I believe the 702A was a Ham as opposed to a marine
. Should receive all bands and I think it can be "opened" to transmit on marine
bands as well. However I don't believe that is strictly legal
nor sure if it is recommended since marine bands require tighter specs than are allowed on Ham bands.
Still should be an excellent radio
if in good condition. You will probably get a better idea from the experts on the forum but I would think it could be worth up to a few hundred or so if working properly.