BEING RESEARCHED 1910s-1920s PRR (Pennsylvania Rail Road?) WRR Lapel Pin NOT FOR SALE til IDed

This is an unidentified circa 1910s or 1920s enameled lapel pin by Whitehead & Hoag. It has a red keystone at its center and reads P.R.R. W.W.R. around its border. It may possibly have something to do with the Pennsylvania Rail Road. WWR are the call letters for the Western Washington Railroad, but since the two lines are so geographically removed from each other, it may instead stand for Who's Who in Railroading.

Circa 1910s-1920s.

Approximately 5/8" in diameter.

Gilt brass, enamel.

Vertical pin with tongue-style catch.

WHITEHEAD & HOAG CO. NEWARK N.J.

This is from an accumulation of unidentified items which we will be listing more of over the next few months. Item will not be sold until it is identified. VBX14 LX3/14

7+ (Very Fine+): The pin shows some light abrasions.

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