Just picked up 2 straights , wondering if anyone has info on them .

Edwd. Atkinson . Milton st. Sheffeild . on one side . nothing on reverse

Gottlieb , Hammesfahr , Solingen , Foche . again , nothing on reverse

the Atkinson is far differant than the other 80 plus straights i own .
it has what i am calling a hollow grind just below the spine
about 1/4 wide and 2 and 1/2 long . on one side only . strange or ?

Thanks all
Peafowlguy