An odd red thing

[RelicHunterPro]

At first I thought it was a button now I have no clue

 

[jeff of pa]

Bicycle Reflector ?

Most Definitely a Reflector
Bicycle reflector glass jewel balloon tire bikes others | Bicycling

BICYCLE REFLECTOR GLASS JEWEL BALLOON TIRE BIKES OTHERS
though different design on he plastic/Glass . Looks Very Close to Me

​

https://www.google.com/search?q=vin...9p4rbAhWitVkKHYPhDzwQ_AUICygC&biw=939&bih=595

 

[Kray Gelder]

Reflector?

 

[GaRebel1861]

An eyeball from a teddy bear?

 

[coinman123]

An eyeball from a teddy bear?

A teddy bear with reflective red eyes might be a little scary though!

 

[Tony in SC]

People would also use them as car tag retainers.

 

[Joe-Dirt]

I think Jeff nailed it!!

 

[Anduril]

It looks too small to me to be a bicycle reflector? Maybe?

What are those reflector things you see on old rail-road crossings and some stop signs?
Any chance it's one of those?

 

[captain_mike]

Might be an old bicycle taillight from the 60s/early 70s? Definitely looks like a little 6V light bulb belongs inside it.

 

[jeff of pa]

Might be an old bicycle taillight from the 60s/early 70s? Definitely looks like a little 6V light bulb belongs inside it.

I figured that was for the Screw/Bolt . however

That is Possible

 

[s2ndjetli]

Whats your dimensions ?

 

[flyadive]

That is a reflector from a stop sign.

 

[captain_mike]

Let's see a side view? Maybe Jeff's right and a bolt/screw goes through it. Maybe it's a taillight from a 50s kids pedal car? Or a carnival ride light cover? We need a side view and dimensions too...

 

[Madmox]

It looks too small to me to be a bicycle reflector? Maybe?

What are those reflector things you see on old rail-road crossings and some stop signs?
Any chance it's one of those?

I think this. A reflector from an old stop sign

 

[A2coins]

reflector

 

[Hawks88]

I would agree with Jeff it’s a Reflector for a bicycle.