Found this on google
ALLEN A. KERR
J. F. O'DONNELL
The Allen A. Kerr Company
1004 Chestnut Street
PHILADELPHIA, PA.
JEWELERS. ENGRAVERS AND STATIONERS
College and Fraternity Pins
Medals and Trophies
Dance Programs and Class Day Invitations
And judging from this page
http://keymancollectibles.com/worldseriespresspin.htm
the company was around in the early 20th century
google is your friend