Rare 1960's Bulova Time Piece M7 JB champion band 10kt gf top

Beautiful vintage piece is running and keeping time Good condition cosmetically some wear to crystal minor. M7 identifies this as made in 1967 Fits to almost 7 inches I can add extender if requested. Has safety chain and latch Runs and keeps time however the second hand moves only occasionally and not hitting the crystal because it did this even out of the case. Prob needs to have second hand reset