Ok, here we go again. This is the 1970 Bulova with the 1968 11BLC movement. This is the one that has the Taiwan caseback and came in the "Excellence Collection " box.
Not seeing any match for this one in our ads, but Sea King comes to mind. The case number 2913 is listed in the case parts ref book, but does not list the T-2913; I wonder if the T designates Taiwan produced. The book also designates the 11BLC for this case (non-T).
Unknown for now
I have read that the 70's were some tough years for Bulova. They were venturing into Asia during this period, Digital watches were starting to compete, Swiss inflation was going on and a couple unsuccessful business transactions that didn't turn out very well. It was in to the mid 80's before Bulova actually started getting back on thier feet again. They were trying to pump out a lot of watches back then. Probably most with no model names or advertising for them.