Baumgarten & I have been chasing the early Polid Antikorro serialization from some time. He has a tubeset with No. 280 and this Otto Bock peddled sidelock has No. 270. Very difficult to tell but the stamp just forward of the flats may be a set of crossed palms like that seen on Paul Scholberg's examples.








Otto Bock


Paul Scholberg with Poldi Tubes with a S surmounted over crossed palms.

Kind Regards,

Raimey
rse