Old Rocker Arms--Inlet Levers

[diablo]

Got some old inlet levers on ebay--seem to be nickel plated--can anyone give me more info on them? Thanks
https://www.ebay.com/itm/33309354711...84.m1555.l2649

[MMasa]

The one with the hole is a 1915.
The two without are 1916-1922.
Mark

[diablo]

Thank you.