Another unknown...

[DougsGraphics]

For some reason, this thing looks familiar to me but I don't know why. It's about 2-3/4" in overall length and the loop fits a finger or thumb comfortably. On one side (side shown) there are small indentations -- 21 to be precise -- drilled (presumably for indexing it's location?) In the end, there is a hole -- appears unthreaded, that is about 3/8 to 1/2" deep. It appears to be brass. I was thinking maybe a part from a musical instrument? Anyone got any ideas?

[Steve in PR]

At first, I thought it looks like a retaining pin or removeable keystock. The fact that it has the drilled indentations must make it something more unique than that. It might regulate the depth or width of something.....

[PAPPY]

It is very possible that your item is a throttle pin from an old tractor. The notches are for the throttle adjustment and it had a wire in the end at one time that went directly to the throttle.

[EBCIII]

That is a very unique and cool find, Beale.

[DougsGraphics]

Originally Posted by PAPPY

It is very possible that your item is a throttle pin from an old tractor...

Thanks for the input, Pappy.

[julieburger]

A very cool item.

[bigjohn]

could be of a trumpet.

[pris]

Very cool find. I like all the suggestions, which are much better than my first thought (sardine can key).

[Arkwater]

Originally Posted by bigjohn

could be of a trumpet.

Thats what I though of when I saw it. A lot of brass music instruments have those. They are used to detune while playing. Makes a note sharp or flat depending on the position.

[DougsGraphics]

Originally Posted by bigjohn

could be of a trumpet.

Twas my first thought (instrument part)... your picture sold me on it, and then I found this pic:

http://www.palatinousa.com/fileadmin...-015TP-Big.jpg

which really sealed the deal. Sure looks like the third valve tube adjustment key shown! I think we have a positive ID.