Mag wheels what are they?

Magnesium wheels 15x14 (Indy rear?) 6 drive pins . They have several USAC small ink stamps with various numbers 2, 7, 66 . Also some sort of triangle logo with what might be a crown on the top(Canadian tire ?). Looking for info or offers. I know some one here has the answer?

That definitely looks like the Canadian tire logo for sure.
They sponsored some Indycars for a few drivers back in the mid-80's
Uncle Jacques
Jim Crawford
Johnny Parsons

They all look like a similar style of wheel

Dymag or Technomagnesio maybe?

probably technomagnesio

Thanks for the answers, any thoughts on value or anyone needing these?

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