01-08-2022, 08:07 PM
It's only just occurred to me that a more likely explanation would be that the R757 wasn't blue, but that you're looking to re-cover it in a shade close to one Roberts would have used if it had been. Here's a real blue R757 which does look to be darker than my RP26B and close to the old Oxford shades:
https://i.ebayimg.com/d/w1600/pict/30435...eather.jpg
https://i.ebayimg.com/d/w1600/pict/30435...eather.jpg







