DarHin
Posted July 8, 2012 - 5:17pm
FWIW
The only Bulova model I've found for the equivalent BB and SUC crystals is the 21st Century.
BB MY2070 found in the BB #38 catalog
SUC RMW90-13 found in the 1962 supplement
Both the BB and SUC have the dimensions as 20.7x19.8.