I have rescinded my request to close out my membership, and I hope I can still stay a member.  I was greeted rather warmly by several members, and my many thanks to them.  However, I will be more careful in the future.  If I do see an interesting problem, bearing in mind that it may have been posted a while back, I still may comment on it as to what I might do to repair the problem--especially if I have a shortcut or an interesting story behind what happened when I had that same problem.  I will look forward to reading all I can here, contributing my bit, and whenever I get the wherewithal, contribute some pictures of my "babies."

Just to contribute to an (admittedly old) thread: I just picked up a similar Underwood "46" today--an "Underwood Semitic" Hebrew model with 46 keys (hence, the "46," I'd assume). I'll post pics on the acquisitions thread when I get them up. The serial number in the picture above is not a "467" on the right hand side, but a "46T." (Mine is 1605158 ... 46T.) 

My guess is that the Underwood "46" was the catch-all for all non-standard language and keyboard arrangements. 

And, while we're on the thread called "Old, rusty Underwood," might I put in my two cents once again and say that all Underwood typewriters by now can be considered as "old."  Now, Olivetti, who bought Underwood outright in 1963, used the name on some of their machines.  The serial databases I've seen put the last date Underwoods themselves were made at 1968 (consequently, the year I was born).  But I am having a hard time wrapping my mind around that, because, at least as far as I have seen, Underwood's last true Underwood machine was produced in 1963 with their Touch-Master and Type-Master (which is a little more Olivetti-like) series machines. The latest I have seen an upright electric were the Underwood 700 and 702 series machines made sometime in the late 1960s, but, again, these were more Olivetti-like.  And then there was the Olivetti-Underwood Praxis 48 (an absolute total nightmare of a typewriter to have to fix, as was the Editor 5 and the Lexikon 92C, all of which give me bad dreams and heartburn, but these are all Olivetti machines outright).

For my Underwood "Semitic," yes the carriage does space from right to left, so many of the carriage mechanisms had to be built essentially backwards. Fortunately, I recently got a standard Underwood 5, and when I get to my office today, I want to take some pictures side by side to compare the two. 

As for the "46" designation, I've done some internet sleuthing and found some others. This one is in [url=https://en.wikipedia.org/wiki/Underwood_Typewriter_Company#/media/File:Հայերեն_գրամեքենա.JPG]Armenian[/url] (and despite the angle, you can barely see the 46 in the lower left): 

There's this Swedish "46," with unusual frontal carter (want). Here's another with the frontal carter.

There's this one with Russian writing circa WWI (since it has "Petrograd" on it), but it has a keyboard for Finnish. And this "46" that's actually Russian/Cyrillic, housed at the US Holocaust Memorial Museum.