Thanks for that. I've found that we have another example of a case serial number starting with an '-'
https://mybulova.com/watches/1940-president-d-10264
We have a number similar examples of the case showing what I believe is the correct dial and hand combination:
Vintage Bulova Watch Search | myBulova.com
This case style ran from 1940 to 1949, so pinning down the year is tricky. We could go with the movement, but with a replacement dial and hand combo it could be highly possible that the movement isn't original.
The starting '-' is a puzzle. At first I thought it may have been a mis-struck number, but the above example looks like it is in fact a '-' (I sort of see a 4, but then again....)
At the moment it's listed a 1946 based on the movement, so I think for now that will do, unless others have a theory/information about the leading '-' in the serial number.