I've got a NDC 1948-50 and a no-notch '47. Other than a slight difference in the under carriage, I can't tell any difference in these razors. They both seem to shave the same, feel the same, and weigh the same. Has anyone who has made a similar comparison noticed any difference? I also have a similar looking '48 Aristocrat Jr. set (Aussie market with the off-white bakelite case). The Junior is noticeably heavier and looks like the silo doors are rhodium. Is that possible? Anyway, I like the Jr. the best. Any thought, comments?