Blank-backed Heinie Zimmerman card from the 1911-13 Pinkerton issue. Pinkerton cards in addition to being used on the T5 cabinet issue were employed in multiple formats including postcards scorecards and as we see here blank backed cards. This example has been graded VG/EX 50 by SGC due to slight wear at the corners but is otherwise quite attractive. Far more affordable than the T5 cabinets yet using the same photographs and with equally outstanding aesthetic appeal.