This has popped up on ebay: https://www.ebay.co.uk/itm/Vintage-Atco-Standard-Lawnmower-c1920s-Villie...
Might be a bargain if you live reasonably close to Cornwall... especially with the carrier wheels, but I didn't realise that there was a 14" Standard, I thought the closest was the HY?
Educate me, please, gents!