Acquired in a lot this week, the Ericsson would date from c.1931 based upon its patent date. It thus predates the Grand Shave King in focusing its design on lather management, here with a plate design which allows for an Old Type geometry but allowing lather to more easily pass through. It's a very fine shave, slightly mild but efficient as you'd expect from the nice rigid geometry. Sent from my LG-US998 using Tapatalk
On top of the cap sure, Kirby Beard and clones. Don't know of any ridged on the bottom. Then of course there are the Grand Shave King and clones Sent from my Pixel 2 using Tapatalk