✅ SOLVED A pat on the back if you know what this is...

[BigWaveDave]

The back side is threaded, like a cap... and there seems to be a purply, crystally, glassy, edge to it. Found at a h omesite, 1920's. My impression is that it is brass, and painted white, like an old appliance

Thanks for looking

 

[ivan salis]

appliance cover

 

[NOLA_Ken]

Lampshade nut

 

[Charlie P. (NY)]

Finial of a lampshade?

 

[Charlie P. (NY)]

Ken and I think alike (and at the same time!)

 

[BigWaveDave]

I like the idea of a lampshade finial, but the crystal-like feature is curious to me. Perhaps the pics don't show it, but there is a purple crystal showing through the paint

 

[fyrffytr1]

Decorative crystal lamp shade finial!

 

[tamrock]

Fancy floral design 0.25 inside diameter, 1.5 parallel thread pitch standard acorn type lampshade nut. circa 1920's Very Rare!

 

[FreeBirdTim]

Toilet hold down nut. You'd have one on each side of the toilet. They attached to long threaded bolts and had a washer under the nut. If you tightened it down too much, you'd crack the toilet! Too little and your toilet would wobble!

 

[QUICKSILVER (appletree)]

bet its off an old glass shade from a ceiling light

 

[NJ Marty]

Old gas valve end cap or something to do with exposed gas lines/fittings that were in view and needed to look nice, maybe from an old stove.

 

[SouthernPride8900]

Not sure what it is but very cool looking nice find!

 

[BigWaveDave]

I think Qsilver has nailed it... In fact, after I signed off last nite, I was looking up at my bathroom light, found myself staring at the nut that holds on the ceiling/globe lamp. Thanks guys for your ideas and opinions, stay tuned for another mystery....BWD