Got this from the Air Force in 1975 as a gift from Pilots after we came back from Vietnam its 10k gold and works great, put the plastic is bad? I need someone the put a new one on this nice watch.
Send a PM to DarHin about a crystal, he has an excellent selection at very reasonable prices. He may even have a glass crystal for your model.
Model name is Oceanographer ( but that's not the movement type)
ad is Dated 1969 http://www.mybulova.com/sites/default/files/vintage_ads/1969-Bulova-Ocea...
WOW that is a fuuny