I've got one too - mine was missing the knee lever so I bought one - then discovered there are two types LOL!!
Mine also came without a top, and I found one with a busted bottom so bought that. However the back bracket was not the same style as that on the bottom - bought the hardware off ebay and replaced that so it will hold when closed.
I have mine in a cabinet made to hold the 3/4 size case. DH cleaned, re-wired and adjusted it for me (he's my OSMG).
Mine is a 1925 model
