Hi Sid,
Interesting, Hipkens has long been my suspected candidate for the U.S. production of these three sets of tableware moulds. How much is known about the company, are the company archives stored somewhere, or were Hipkens absorbed by a US glass-making company, as Sklarny Inwald did, with the Czechoslovak mould-makers Ullrich and Christl?
Ken,
Both the Lady Face's and the Pigeons, appear to be Czechoslovak designs from Karel Zentner. These, in Czechoslovak production, were produced into the 1960s and beyond.....
Regards,
M