is shown here.....
http://www.astatic.com/cb/d104m6b.htm
The handheld mic is supposed to have the same element, which is still
available.

It's not the same element (I was one of the designers of the mobile
version).
The ceramic version of the D104 element (I think it was MC-320c.) wouldn't
fit in a hand held mic.
However, the response of the mobile ceramic capsule is similar to it's big
brother and probably could be used.