Reverend Rob
Posted March 14, 2019 - 10:29am
I'd say the caseback has been overzealously polished, but you can make out the Bulova stamping. There is also a good chance this dial has been refinished. Black is the most common dial colour on refins.
MLB is Maeder-Leschot of Biel and was a common case suppler to Bulova Internationally.