Mystery Brazil Wheels

[CuJoBug]

I have four wheels I cannot identify. I have spent hours in the Forum and my head is spinning. What brand are these? For what model were they originally intended? Should I be looking for other markings? (I could not find any on the inside.)

This is what I know.
Stamped Made in Brazil
Stamped 4 1/2Jx15
Stamped M over K (or at least this is what it looks like)
4-lug
20 square slots

[Stock Steve]

"Mangels" possibly? Although I'm not sure what their logo looks like.

Some similar looking ones discussed here: https://www.thesamba.com/vw/forum/viewtopic.php?t=607424&highlight=mangels
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Stock Steve
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Thanks Veterans

[NJ John]

I used to have a bunch of Brazilian Mangles brochures. Those rims were in there. My buddy worked in their NJ warehouse. Then he left to work for Eagle Alloys, go figure.
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1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!