neetstuf-4-u
Posted September 19, 2020 - 2:26pm
The movement was produced / assembled one year and not used, so it was stamped again when it was installed in a watch, It's entirely possible Bulova produced more high quality 23 J ladies movements than demand for more expensive mechanical watches in 1974, and it took a few years to use them up. Quartz and Accutron watches were increasing in popularity, and the majority of mechanical Ladies Bulovas at the time were 17 jewels.
The curious engraved writings you see in the case back are jeweler's marks. In days past, when a watchmaker serviced or repaired a watch, he often signed it with his own code to keep track of what was done, who did it and when. Movement is 5BD, the ink stamped number on case back interior is the case style.