Canadian Steel Mark II Liner Identification?

Hello,
I've been going through a collection of military headgear and identifying the shells and liners to the best of my ability. I've come across this liner that I can't identify in the slightest. It is currently in a Canadian steel mark II 1942 shell produced by Canadian Motor Lamp Co. of Windsor. The shell still has the bales but no chinstrap and is in great condition, possibly never saw much combat.

The liner is not like any one I've come across or can find online. I have been unable to identify the manufacturer's stamp, though it looks super familiar. It's not an original liner, but beyond that I'm stumped. This liner has its own bales and a chinstrap. Instead of rubber bumpers it has steel pressure ones. I've attached some images of the liner below.

Any help identifying it would be much appreciated!

Those chinstraps are US issue and we didn't have them until we bought the US M1 helmet in the end '50s... Also you can clearly see it's marked with the US ordnance flaming bombs. If you look inside a US issue M1917 Kelly helmet I think you'll find these. They would have made replacements until they were out of service and that took until into WW2.

Here's a site that sells repros to show you what I'm talking about. Military Reproductions

You need the liner for a Brodie I think. Here's what you need, see Collector's Source in Acton On. Canadian MK II helmet C.L./C. 1942 - Headwear - Collector's Source, Military Collectibles Online

The M1917A1 liner looks to be the winner. I was focusing on Canadian or British items when I should have been looking south of the border. The stamps being from the United States Army Ordnance Corps explains why they look familiar but I couldn't place it, we don't have much beyond Canadian and British military items in our collection.

How the liner ended up in a Canadian shell is a bit odd. Probably someone completing a 'set' or working with surplus. The shell at least appears to have come from the local Emergency Services Department, Cold War era, which would follow the surplus possibility as I'm sure much of their stock was made up of that. It would also explain the relatively good condition of the shell and liner.

Thanks for the help and the links!

Apparently there were some fire departments that used these post war, I have a little museum up the road from me that has a couple examples. The set was probably just forced to live together by a collector that was happy to find ANYTHING that came close to fit. You must understand the gunshow mentality...if they don't know they will take what they can get.

Apparently in the Tin Lids book this combination of shell and liner may have used by the Canadian Civil Defence post-WWII. This fits in with the shell looking to be from the local Emergency Services Department. Our internal catalogue record doesn't note anything about the liner and the donation record isn't as detailed as it could be due to age. I'm trying to confirm this by getting a copy of Tin Lids or at least a copy of the page. I also emailed the Canadian Civil Defence Museum And Archives hoping they can confirm.

I'm still operating under the 'gun show mentality' conclusion since it's such an odd combination and it seems the most plausible, but who knows. If I can confirm the CCD possibility at least in theory, if not for this particular example, I'll update here in case someone else come across the same thing.