A Crocker First Plain Back Pair

A Crocker First Plain Back Pair /I BR San Francisco, CA 5 1902 Plain Back Fr. 601 Crocker First NB Ch. 1741 VF EF BR San Francisco, CA 10 1902 Plain Back Fr. 627 Crocker First NB Ch. 1741 VF EF. BR grade 20, service 707000