Well, in all fairness the auction doesn't seem to be trying to mislead. They clearly note it is only omega vintage movement and omega strap/clasp - the rest is custom:
"Omega Vintage Automatic Movement 500-565 Series, Movement details – cal. Omega 562, 24 jewels, incabloc, 50 h power reserve, sweep second hand, Reed's regulator.Leather Strap.Night glow hands. Original Omega Planet Ocean Strap & Clasp. Auctioneers note:- This watch is a bespoke watch with genuine Omega movement and Strap which has been professionally restored in a modern casing & bezel. Timing has been checked and verified."
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