File:Vintage Bulova Accutron 218 Men's Electric Watch, Yellow Gold Case With Rolled Gold Back, N4 Date Code On Back For 1974 Production (14717949892).jpg - Wikimedia Commons
Bulova Accutron 218-N4 – My Retro Watches
Vintage Bulova N4 Accutron 2302 Date Watch Movement Parts Repair Doesn't Work | eBay