Valve Stem?? What from??

[VOL1266-X]

I got in a short hunt at a CSA site before the rain started. Modern Miner and tennessee Digger believe the middle brass item is a valve stem. Anybody know from what? Thanks , Quindy.

 

[sniffer]

looks like one from a tractor. possibly john deere or minneapolis moline

 

[allan]

model T had them or ones very similar

 

[stefen]

MF

 

[allan]

sorry I was thinking that was a cover for one,