Hey, Darren!  I am picking up an 18" Miraphone on Monday.  The phono
turntable spindle is straight, unlike the tapered Reginaphone spindle.

After we get it home I'll take some pictures and measurements for you.
Unfortunately, mine is missing all the phono parts, too.

Enjoy!

Nancy Fratti - Nancy Fratti Music Boxes
Canastota, New York, USA