1940s Vintage Keds Sneakers

Extremely rare unworn new old stock vintage Keds. Black canvas with brown rubber sole. Blue heel patch. These appear to be factory seconds as silver paint has been used to cover the inner logo on the heel and the blue heel patch has had Keds partially removed with a razor. I can find no flaw in the shoes btw. The numbers inside the shoe are 7110 K 6 -8520V in one shoe. The other has 9433 K 6 -8701G. Size is men's 6 inside sole length is 10"