.450 Unknown Blank. (Edit: .450 Revolver Blank for Michelin tyre pressure alarm)

General Ammunition Discussion
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#1

I have included two photographs of the headstamp to try to show that this appears to not be a CF.

Could this be for launching something, or line throwing?

There is a big plug of what appears to be shellac, sealing the cartridge.
There are also spots of ‘shellac’ sticking to the sides and the base.

450-1
450-11234×1242 231 KB

450-2
450-2896×793 134 KB

450-3
450-3845×811 92.8 KB

450-4
450-4874×904 139 KB

450-5
450-5954×990 146 KB

Any help in identification (use, origin, date) would be greatly appreciated.
Sam3

#2

Hi Sam,

It’s a blank for the Michelin puncture alarm device.

Regards,

Fede

#3

Hi Fede,
Following your lead, I found a previous discussion on IAA (.450 Rev. blank for Michelin tyre pressure alarm):

What a surprise!

Many thanks,

Sam3