This was purchased from the estate of a former GM designer.

Appears to be a prototype emblem similar to the fender emblem for a 1974-1977 Malibu, possibly more.

Approximately 3-13/16" long.

'M' is approximately 1-1/8" tall.

Weighs 2.3 ounces.

Looks to have been machined from bronze. This particular prototype still had some work to go before being completed. There are some scribe marks on the front.