As
@Grolazu has said your going to need to make sure you get one with the correct endlinks which may be difficult. I've been down this road before bc I wanted a replacement bracelet for my tw best day date which uses the same size gen spec end links your going to need. They are size 55-b. and very hard to find bc the newer style bracelet endlinks are completely different. None of the 30.00- 50.00 eBay bracelets will fit your case.
I've seen a few "Italian made" solid gold aftermarket bracelets go for about 5k but again those are made for the newer style cases with different endlinks so that won't work either.
Best bet is to contact a jeweler and have one custom made to fit your case and a good jeweler will be able to match the color of your case to the bracelet weather you want to use 14k or 18k. It's all about combining the rite amount of elements to get the desired color.
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