Nice watch again. It sure looks like the Treasurer that was introduced in 1928, but the lugs are different. But the watch also has a serial number that is part of this special range I state is from 1927. See my forum post http://www.mybulova.com/forums/where-are-1927-bulova-ladies-watches#com…
The case serial of above watch starts with 858 and is signed with "American Standard" and NOT the expected "New York" for 1928 watches. American Standard is the case signature as used in 1926 and 1927 and on top of, the movement is from 1927, so in my forum post I identify this specific 858 series as 1927. Since all watches I find starting with 858 have the American Standard signature, and NOT New York, and all come with 1927 movements.
So maybe above watch was to become the Treasurer with the foresaid lug change but we have no 1927 ads of that watch to prove it. Hence: unknown for me.