What's this then (02)

Tamper-proof sumthin'?

It's one of those new-fangled carrot patch fence posts, isn't it?

it looks like a boat propeller.

That's what I want to say but it just doesn't look like it has enough pitch.

I know! I have a few of them, it is a bend screwdriver tip.

is it one of those canoe carving axes?

A rather uncomfortable bicycle seat.

A milkshake stirrer.

Or a freebie from his proctologist.

Screw in locking mechanism.

Its the penny I placed on the railroad tracks as a youth 40 years or so ago. I see you found it. I spend hours looking for it. Where did you find it? Always wondered what it looked like after the train ran over it.

The secret is to tape the penny down to the track. They squish to about quarter size. They probably get bigger now, with inflation.

I'm with 3Doug

Hence the So I've made it monochrome....

because the red would have been a dead give away!

I'd go along with that - but all the red plastic model props I've come across (for rubber-band powered things) have had a cone-type boss, with a facility for fixing a wire through the center & bending at a right angle (_{dammit this is getting difficult to describe, but it's too late to open up a drawing package to start the "every picture is worth a thousand words" bit}).

Props I've used with model engines (boss designed for mounting on engine shaft - therefore flat) have been white nylon-type stuff, or wood.

I go along with the wood model airplane 2 blade prop. I would guess maybe an 8 x 6, taken at an extreme closeup.

Is it a shoe horn for the right foot for left-handed people?

Fishing spinning lure?

It really seems a metallic boat propeller (with two blades) due to the blade geometry and the surface texture. Or maybe a mixer blade in a hardcore brewery?

I agree with post #10. A milkshake stirrer.

Regards JD.

I go along with #3 & #10- a boat propeller. Probably sand cast bronze...

A pump impeller?

Possibly an old cam style window latch? Or one of those crazy IKEA screws?

I'm not sold on anything so far, I don't think it has anything to do with milkshakes or their machines, I might be sold on the prop concept but it doesn't look to me like the far side mirrors the visible side...

Any hints on scale or what the 'post' coming off the bottom is? Or any kind of hint at all?

In a different monochrome...

Ther's a gap under the RHS helix - so not a screw

Shaving from a lathe?

As the foreground blade extends beyond the centre boss, a propeller matching blade in the back ground would extend beyond the centre boss? which would be seen to extend at the bottom right and top left? as it does not this makes the blade singular, or a screw petering out on the far side? also it does not have a locking screw or cap. But it does look cast, this making a window latch look more promising, though a window latch I think is a lot flatter? It could still be a milk shake stirrer if its a screw shaped blade?

Regards JD

Could it be the cutter in an old fashioned "Mincing" machine?

It is Idian Bread in making. Village woman spin it in air while maiking.

Blade for a rotary lawn mower?

OK, loads of great idea's here, I've given a good answer to Quobaldt 'cos I think he was the first in the right area, but 3Doug was very nearly spot on, apart from the bit about the rubber band...

I hope some of you will give him some more good answer points?

Hey, I guessed an 8 by 6 prop and the marking is 8 by 7! I certainly was closer in post 26 than anyone else!

(I might have protested sooner, but I have beenout of the country)