I have bought this Bulova from eBay in Feb. 2021. I did DIY CLA and replaced original (maybe) blue steel main spring by Ronda-Flex NOS white metal spring also from eBay. The FHF logo is engraved on the dial side of the movement, as you see in fig.5.
Certainly a wonderful match for a 1930 Bulova Sky King as show in this advert.
Is the crown a replacement?
In reply to Certainly a wonderful match… by mybulova_admin
This watch was sold with this silver color crown and I suppose the crown is non original. It looks too bulky for the watch. Is the original crown gold?
1930 Bulova Sky Hing
advert with part of "6" digit

In reply to 1930 Bulova Sy Hing advert… by jabs
jabs-san, thanks for sharing the ads. Yes, exactly it is. Also I learned blue hands on my Bulova can be original!
Welcome to mybulova; Beautiful watch and nice repair done! Thank you for sharing it with us.
1930 Sky King
Welcome to myBulova and thank you for sharing your watch with us. It is a beauty!
1930 Bulova Sky King
Beautiful 1930 Bulova Sky King. Thanks for sharing.