A quick Google shows that H K Porter bolt cutters are still available today though much less decorative.
The name H K Porter is better known as a builder of light steam locomotives from 1899 till 1939, located in Pittsburgh Pa. I'm not how the companies are related, there seem to be different logos.
May 2019 update; While snooping around Cardon Tools near Perth Ontario, I found they had on sale a number of brand new 1950s era 1/4" bolt cutters. Much less fancy but definitely from the same company.