Classicwatch Vintage Watches

Hi there, this is a great forum first off. So I've got this LeCoutre stamped $20 gold coin watch and have been searching off and on about the watch however there isn't much information on this particular model! It is in its orignal condition and the original crystal has been cracked. The dial is still legible some of the marks seem to be fading or rubbed off. It tells time fine however is a little bit fast. There also seems to be a small screw missing on the dial. Don't think the original band is on there as well.
I don't plan on selling but would like to get info on estimated value in its current condition and possibly after a new crystal and service.

And not sure if you guys may be able to tell me if the original band and crystal are available?
Thanks in advance!

I'm going to guestimate $4000-5000 for the watch. I have not had one in a while, so it's just a guess.

Not sure if I should take this off this thread but are you able to source and/or make the crystal and get original bands for this watch? Thanks so much for your insight!

PS tried to attach pic but says somehtting about the bandwidth!

Crystal & service no problem, band, I don't have.