kkt
·Man, your dad had some VERY appreciative patients!
Standard advice for people new to vintage watches:
Don't wear it or wind it very much until they are serviced. Service is mostly about lubricating the movement, and the lube dries up after 4-5 years. They will continue to run and keep okay time while the lube is dry, but it causes additional wear on the parts and leads eventually to having to replace them.
If you're going to sell them, don't have them serviced first. Let the buyer do it. The buyer will be more comfortable knowing someone they trust did the work, so if you have it done you won't get the cost of the service paid for in the additional sale price.
If you have them serviced, tell the watchmaker NOT to polish the case. Polishing the case hurts the resale value to collects a lot. Not that they'd need to here as yours look like they're in very nice shape. Also do NOT take them to an Omega Boutique or send them for service by Omega. Omega doesn't see any value in vintage watches as such and tries to make them all look brand new, by polishing, swapping hands, etc. Use a watchmaker who's does Omega authorized service (so they can buy Omega spare parts) but not by Omega. If you want to have them serviced and don't know a watchmaker yet, post your location and someone may be able to recommend someone.
I'd recommend keeping the bracelets with the watches. These are probably bracelets picked out for the watch by the first buyer, the Constellation one at least. They have a history with the watch and most collectors would rather they stayed together.
Standard advice for people new to vintage watches:
Don't wear it or wind it very much until they are serviced. Service is mostly about lubricating the movement, and the lube dries up after 4-5 years. They will continue to run and keep okay time while the lube is dry, but it causes additional wear on the parts and leads eventually to having to replace them.
If you're going to sell them, don't have them serviced first. Let the buyer do it. The buyer will be more comfortable knowing someone they trust did the work, so if you have it done you won't get the cost of the service paid for in the additional sale price.
If you have them serviced, tell the watchmaker NOT to polish the case. Polishing the case hurts the resale value to collects a lot. Not that they'd need to here as yours look like they're in very nice shape. Also do NOT take them to an Omega Boutique or send them for service by Omega. Omega doesn't see any value in vintage watches as such and tries to make them all look brand new, by polishing, swapping hands, etc. Use a watchmaker who's does Omega authorized service (so they can buy Omega spare parts) but not by Omega. If you want to have them serviced and don't know a watchmaker yet, post your location and someone may be able to recommend someone.
I'd recommend keeping the bracelets with the watches. These are probably bracelets picked out for the watch by the first buyer, the Constellation one at least. They have a history with the watch and most collectors would rather they stayed together.