Model 1924 sometimes referred to as the "Shovel head"...great shaver with high amount of audible feedback on the whiskers.
I love mine but find it quite aggresive,but as ever ymmv.
It does live up to its nickname. I found that it tended to hold water in the head, so make sure you shake it out completely after rinses.
So Oscroft........when are you doing a Carbon steel vs SS coated vs SS uncoated blade test?