Trying to determine the value of an Omega Constellation ca.1965

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You didn't mention if the bracelet is also solid 18K. These generally are hallmarked with a "0,750" somewhere on the clasp. Also, the dials on these watches are generally 18K gold as well. Look for a little "OM" next to where it says "Swiss Made" on the bottom of the dial.

My guess is that if the whole watch with a gold bracelet weighs 5.25 ounces, and the movement without dial weighs around 0.5 ounce, you're looking at about 4.5 to 4.75 ounces of 18K gold. At $1,650/oz. that's about $5.5K to $6.0K of gold value.

Hope this helps,
gatorcpa
 
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You didn't mention if the bracelet is also solid 18K. These generally are hallmarked with a "0,750" somewhere on the clasp. Also, the dials on these watches are generally 18K gold as well. Look for a little "OM" next to where it says "Swiss Made" on the bottom of the dial.

My guess is that if the whole watch with a gold bracelet weighs 5.25 ounces, and the movement without dial weighs around 0.5 ounce, you're looking at about 4.5 to 4.75 ounces of 18K gold. At $1,650/oz. that's about $5.5K to $6.0K of gold value.

Hope this helps,
gatorcpa

Yea, I can't imagine wanting to pay $5.5-6.0K to wear one of those, but that's a tidy sum to put in the bank.