OMEGA SEAMASTER 120M QUARTZ 1960230 3960929

I am interested in buying this omega seamaster 120m quartz calypso 196.0230/3960929. In this condition I myself believe that after making the purchase I should make the replacement of the bezel insert, hands, possibly dial and crystal. This watch is on listing for a bit less than $200 usd would it still be worth to repair and replace parts or is it better just to look for one in a better condition? Everything seems to be original, but the serial number is missing in the movement. If anyone understands the market value or if a missing serial number can cause omega to stop selling parts please leave a reply thanks.