Here is one that has a bunch of bids, will
probably go for higher than it should.
Picture number 5 is clear evidence it's been re-etched. But the description says nothing of it.
Look at the buffed low grit horizontal scratches going under etching..
I always wondered about various blades on the Bay but without the blade in hand its hard to tell. This one is fairly definitive.
It's something I've looked into for my blades but if i were to sell one then I would feel obligated to say it's been re-etched. IMO
Vintage Wade Butcher Sheffield Straight Razor w Wide Blade Box | eBay
Edit: It's still possible that something was used to darken the existing etching. I could be totally wrong.