Plomb Speeder wrench set 1/4, 3/8, 1/2

[charle10]

I've got a set of 1/4, 3/8, 1/2" Plomb speeders that I gave to my dad because I got a newer Mac set. What would a set like that be worth in decent shape? I have no pictures.

 

[oldtools]

I bought all three together at the swap meet for $13.