Dr Alfred Poell Berti Mandl Austrian Opera Baritone Hand Signed Autograph

PFAS24  Antique 5" x 2" autograph from the 1950s and from a former collectors autograph book containing a stunning character hand signed page for Austrian opera baritone singer and doctor of science Alfred Poell where his signature rests perfectly to accompany his photo undedicated and bar lightly aged this is mint condition. On reverse has an personal autograph of Austrian soprano again undedicated and her signature resting perfectly accompanying her portrait (see image 2). Both signatures are dated from 1953 so surely the earliest autograph opportunities of their kind.