A funny coincidence and somewhat of topic. At the crystal housing I saw the name Bulova. Never heard of and sounded Eastern-European for me. Just a few hours later I saw a Dutch TV program like the The Antiques Roadshow on BBC. To my surprise one of the discussed objects was a watch made by ... Bulova, model Accutron, from the USA. Interesting internals with tuning fork, also shown at Wikipedia. The driving transistor for the magnet coils were produced by Philips here.
