Vintage new black Sportsmaster men's hockey skates size 10? (m)

Description

In the 1930's my friend's grandfather opened a general store in rural Washington state, eventually handing over the business to his two sons.  Now, well over half a century later, the store is closed and the family is sorting through the inventory still on the back shelves.  Most of the items are from the 1950's and still in their original boxes.   Many of the listings in my store came from those shelves.
Description
This listing is for a pair of never worn ice skates.  I have two pair (different sizes), one with a box and one without.  This pair does not have a box but because it's almost identical to the other except for the size, I know what it is.
Sportsmaster Men's Hockey skate.  The other pair, larger, is size 12 so I'm guessing this is size 10 or could even be smaller.  From toe to heel the sole measures 11 1/2" and is 4" at its widest.  The other pair is 12 1/2" long, which is why I'm guessing this pair is size 10.
The skates were on the store shelves and have never been worn.