Brass screw top of some sort?

[patpall22]

found this at a beach a couple of weeks ago. anyone have any idea of what this is or how old it might be. thanks

 

[deepsecrets]

Think that is a collar from old oil lamp.

 

[jewelerguy]

my first thought was a lens retainer for an antique flashlight, but I think deepsecrets has this one nailed

 

[vhs07]

I'm not very familiar with oil lamps, but that sure looks like the lens end of an old brass flashlight.

 

[patpall22]

good find desecrates, that is what it looks like

 

[mojjax]

may be a plumbing part . our old house has chrome plated drum traps & drain pipes under the sinks .

 

[tamrock]

It does look like a lens retainer ring for a lamp of some kind? This photo of a miners cap lamp parts shows a round ring that would screw on to the lamp housing to retain the clear lens. It could also be part of a sight glass, such as on the side of a hydraulic oil tank of a tractor so you can see the fluid level in the tank. Exactly what it is, we may never know.