1911 T4 Obak cabinet of Hub Pernoll, pitcher for Oakland. An image of his 1911 T212 Obak card is shown here for comparison.
Individual T4’s could be redeemed for 50 coupons. They’re 5×7″ and quite thin, unlike the Plow Boy and JKA cabinets. The “29” written in pencil on the back is likely original and was put there due to the numbering system Obak used.