An early platinum Bulova as seen in the advert of 1924 with model number 5892. As you can see, my model has an inner minute indicator, which in the advert is not there. However, I have seen on internet more pictures of this model and we all share the same dial. So, maybe Bulova changed its mind how the dial should look like after the drawing was made for the advert? Another surprise when I received the watch: unfortunately it has a Hamilton 721 movement. The disadvantage of buying it off internet! I will pursue to find out what the original movement should be, so I can retrofit it back to its original state. Any info is welcome to help identify the correct movement. Other than that, another beautiful platinum Bulova, unfortunately identified by a number, hence I herewith baptize her "Agatha". A name that, until now, is not existing in the database. The size is 14mm wide and 30mm long.
EDIT 1: a watch from this time wold have a 5P 17 jewel. I finally found one and replaced the Hamilton movement for an original 5P!