Here is an interesting one from a garage sale. Bulova marked 10BRC Movement - rotor is stamped L1, case is stamped L6. I have had no luck researching this one, with the exception of finding one on Lisa's site listed as an unknown.
This one in my possession is backmarked "stainless steel back - shock resistant - anti-magnetic - self winding - *water proof * - Bulova" along with serial number and L6. Band is Speidel scissor center. Shadow face is marked "Bulova" and "Self Winding".
When I found the ID for this one, the name struck me as kind of curious. It seemed familiar, so I googled and found the Dodge Royal Lancer, produced from 1953 to 1959. The second generation was 1955/56. I would guess a lot of Bulova model names had some significance to the designers or Executives of the time as opposed to just random thoughts. I wonder if somebody just bought a new car in the design dept. and thought it was a cool name. I sure do. Here is a 1955/56 Dodge Royal Lancer, just for the heck of it.