If you are happy with your 02 and it keeps good time then there should be no need to rush in to any service especially if you are short on the cash.

The full service with a case spruce up will set you back at least a few hundred dollar’s worth, not sure on the exact amount, your AD may be able to give you a better idea on the price.

If you decide to go with the full service I am sure the Bell & Ross service center will have the watch looking and running like new. But of course this will cost the dollars and close to if not over half the amount you paid for the watch.