Walter O'Malley Signed Checks?

[TakingStock]

Has anyone seen a complete Walter O'Malley singed check for sale? There are multiple pictured here on PSA's Autograph Facts website:

http://www.psacard.com/autographfacts/baseball/walter-omalley/410

Then I see that some were cut up for baseball card sets over the past year or so. I have yet to see one available for sale, so any leads are appreciated!

[Maddog]

I was looking for one for a while but at the time just saw cut signatures.
Finally settled on a business contract.

I'm sure some are out there.