Please help ID old air-cooled cylinder and heads.

Hello. I recently hit an estate sale, conducted in a dusty/dirty old barn. Prices were very, very cheap...for mostly rusty old dirty stuff. So I quickly started making a big pile, and simply bought everything that looked interesting. But now the hard part begins...trying to identify some of this stuff.

I got one old "jug," (or cylinder) for an older air-cooled engine. I could find only one jug and two cylinder heads...no crank case, etc, etc. But I have no idea what this stuff is. Can anyone help me with this?

At first I ASSUMED it was part of an air compressor. But both heads feature spark plug holes. What do you think, gang? Any help will be DEEPLY appreciated.

The external push rods made me think that this could be a fairly old engine. Cool, eh?

Flat head design so it's OLD, yeah, I hnow that's not much help.

Hello. I recently hit an estate sale, conducted in a dusty/dirty old barn. Prices were very, very cheap...for mostly rusty old dirty stuff. So I quickly started making a big pile, and simply bought everything that looked interesting. But now the hard part begins...trying to identify some of this stuff.

I got one old "jug," (or cylinder) for an older air-cooled engine. I could find only one jug and two cylinder heads...no crank case, etc, etc. But I have no idea what this stuff is. Can anyone help me with this?

At first I ASSUMED it was part of an air compressor. But both heads feature spark plug holes. What do you think, gang? Any help will be DEEPLY appreciated.

This is a cylinder and head from a Gravely multi -purpose lawn mower/root tiller/snow plow.

Thanks, Rustyderby! Much appreciated.