BEING RESEARCHED - Sterling "EMBA" Lapel Pin w/Green Shamrock/Cross- NOT FOR SALE UNTIL IDed

This is an unidentified lapel pin reading EMBA on a green cross tilted at a 45 degree angle to resemble a shamrock. The pin is diamond-shaped and shows an eagle in relief.

Circa unknown.

Approximately 1/2" in height and 1" in width.

Plated brass with enamel.

Horizontal safety-style pin.

GREENDUCK CHICAGO.

This is from an unidentified collection which we will be listing more of over the next few months. Item will not be sold until it is identified. LX8/11

8- (Very Fine-Excellent-): The pin shows some light wear and some small areas of tarnish.

As with all my artifacts, this piece is guaranteed to be original, as described.