I want to thank everyone who responded to my post. I am learning that no matter what implement you buy someone has made a modification to it. Looking at my blade the rear lever is definitely home made, apparently to change blade angles without getting off the tractor.
Also, I like the pictures of the various paint schemes and some of the history of this blade that was supplied.
I have posted three times on this site and each time the info was great. I bought some brackets for my transport box, found out the price for a three point pto driven buck saw was way to high, and now the blade.