M35 vent bushings: id them by maker?

[Adrian Stevenson]

Hi Guys, I have noticed that the vents on M35's vary a little from maker to maker. This can be observed on M40's too, with the well known large vent as seen on "Q"'s.
How about some pics of vents from different makers?
I was inspired to write this thread as I would like to know the maker of a couple of M35's in my collection that I cannot id due to paint filling the makers marks.
Cheers, Ade.

Okay, I'll start with a very large Q-shell vent. This is a M40 size 66. With large size helmets, are the vents larger too, if the same maker??

[Perry Floyd]

On the M40/42 it would seem since this is part of the shell it would differ in size depending on the shell size, but you know I've never compared with precise measurements. This could be a good thread...
Here's one for you, notice the vent on the first M35. It's flat.. I'll post a traditional shaped one below for comparsion..

[Perry Floyd]

2

[Adrian Stevenson]

Hi Perry, here is a "flat" bushing on one of the M35's I would like maker ID'ing. The photo is not perfect as I had trouble trying to get an angled shot with the lighting.
Cheers, Ade.

[Joe]

Here's a bushing on a M35 shell Q62 stamped

[Joe]

Inside the shell

[Perry Floyd]

Adrian what is the maker of your flat rivet M35?

[Adrian Stevenson]

Hi Perry, looks like "ET" to me, but it is covered with paint. The orientation of the stamping is not one I have seen too often.
Cheers, Ade.

[Perry Floyd]

Anyone else out there with a M35 with flat vent bushings?