Hallo Richard!

 RM> "Code Page 437 MS-DOS Latin US"
 RM> That is an alias I did not hear/read before either ;)

I looked it up on the link you provided and didn't see where they refer to
"Code Page 437 MS-DOS Latin US" as an alias.  In fact that page is seriously
lacking in any usable information.  However the onboard documentation
/usr/lib/gconv/gconv-modules provided by glibc states;

-={ grep 437// /usr/lib/gconv/gconv-modules }=-
alias CP437//   IBM437//
alias 437//   IBM437//
alias CSPC8CODEPAGE437// IBM437//
alias OSF100201B5//  IBM437//
module IBM437//  INTERNAL  IBM437  1
module INTERNAL  IBM437//  IBM437  1

According to the above CP437 is an alias for IBM437.  I checked with iana.org
and they confirm CP437, 437 and CSPC8CODEPAGE437 but make no mention of IBM437
... or MS-DOS for that matter.  Anyhow the above information provides very
useful information for the DOS-think fidonet sysops who are forced to use
golded or msged to provide themselves a handicapped communication encoding for
fidonet echoareas.  Tsk, tsk.

Het leven is goed,
Maurice

... Huil niet om mij, ik heb vi.
--- GNU bash, version 4.4.23(1)-release (x86_64-bonnell-linux-gnu)