have a lawn chief rear enging rideing mower briggs & strattion
5 hp
murray Ohio mfg. co.
model #5-525
3-2555o1x57 0043

lawn chief
model 1-24350

date manufactor 11/39
5/25
need a part # for the blade can any body help me

Here is one place you could start with.

Ref:

Lawn Chief Lawn Mower Parts (http://www.lawnmowerpros.com/shop/Lawn-Chief/Lawn-Chief_Parts.htm)