need to identify an unusual glow plug

I have found an old (deceased) glow plug that I have never seen before and I would like it identified if possible. This is just for curiosities sake. The plug is a long reach type with a very wide idle bar and a centre electrode that extends to flush with the rim of the screwed part. there is just the faintest vestige of an element on the centre electrode and on the rim next to one side of the idle bar. I suspect that it may have once had a flat spiral element (there is no room for a normal coil in there. Can anyone tell me what it is? Also how the heck did they get the coil welded in place with that whacking great idle bar over the top of the centre post?

Photo and sketch attached (I hope)

Charlie

[photo not recovered: 28578.jpg]


[photo not recovered: 28579.jpg]

Attachment #1, (jpg file)
Attachment #2, (jpg file)

Perhaps a Glo-bee rc plug?

That would be a Glo Bee, I think they were the only ones that used the flat spiral element. Very popular for pylon racers, they also did a head for the 049/051's that we used for 1/2 A pylon when we still were using the Cox TD's
Cheers JG

Yes, a GloBee. I have some like it.

Thanks for the input gentlemen. I can stop wondering now.

Charlie