First of all welcome
@QT31416
Your father had great taste in watches.
Unfortunately it looks as though the Phillipine climate has been unkind to the dials on your Constellations but the dogleg cases are wonderfully sharp.
The solid gold ‘Watch B’ appears to also have a gold dial - it may be possible to have the lacquer (skilfully) removed and reinstated.
I agree the dial style is unusual for this reference.
For interest Research Omega 168.005 as above and/or read this blog.
http://omega-constellation-collectors.blogspot.co.uk/?m=1
The crowns have all been replaced so the watches have been serviced at some point in their lives but as noted above they will require a service But no polishing.
BTW Sometimes you just need to get a finger nail under the sticky crown to ease it out.