Stem ornament?

Jun 10, 2018
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Picked up a Humphrey branded CCM bike today (similar to the other 1940s CCM I posted the other day) and it has a stem ornament of some sort...just an "M" cut out of it and bolted under the bolt for the stem. Never seen it before? Thought it was one of those fancy steerer/headset mounted cable guides at first.

Now that I have this one, I wanna find more of them...just need to know what they are first.

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