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Torjazzer wrote:Wonderful-sounding little machine: ...Lacking in bass, though, owing to it not having a re-entrant horn. ...

It's true the 157 has less bass, but the fact that it has a bifurcated rather than re-entrant horn is not the reason.
It's the length of the tone chamber that determines bass cutoff--providing the horn has an exponential taper. Based on what I've heard from other collectors, the 157's horn is a good foot to 18 inches shorter than the one fitted in the 163, which was six feet long, the same length as the one installed in the Orthophonic Credenza.

This goes into more of the details -- HTH,
OrthoFan

Here's a 157 near Albuquerque, NM: https://albuquerque.craigslist.org/atq/ ... 19219.html

. . . and a 104 in Albany/Troy NY area: https://albany.craigslist.org/atq/d/tro ... 51632.html

So as you can see, they are out there!