Bulova 1952 -Unknown

This watch was found in my late great grandmother's jewlery case. The back of the watch says:

14K GOLD

BULOVA L2

185292

The movement is a 5AD, with 21 purple jewels and it corresponds with the L2 dating on the case. The crown is a replacement, and says "Elgin."

Any information you can share would be greatly appreciated! I am in love with this sweet watch, and would like to know more of it's story. And I know there's a mason charm  (as shown in one of the pictures) that doesn't belong to the original watch. I just don't have the heart to remove it yet. :)

Still wondering about the case style, because that seems to be the trickiest part to determine!