Rockola 440 (How similar are other models?)

[kestrels]

Hello and thanks for the opportunity to learn something here. Anything 
I am totally new in the jukebox world. "Look out "world, here I come!"-Marco Polo

I'm waiting on a Rockola 440 manual in the mail.
I was just curious if there are any closely related models that share a good number of parts.

From the Rockola pictures and videos of I've seen, many mechanical parts appear the same.
I know that "looks can be deceiving", and would imagine that the electronics were constantly changing.
It seems reasonable that some changes could have been aesthetic.
If you have a good working product, why not attract some more interest by adding a little flash.
The 440 was named "Psychedelic" for Pete's sake. 

Thank you

[Ron Rich]

RockOla, as did most jukebox makers, just sort of "evolved". Post WW2, many of their models were just cosmetic changes, with very few mechanical changes-- electronics, were copied from Seeburg ( according to what Mr. Rockola, told me, with a wink in his eye). Ron Rich

[kestrels]

So, models made within a couple of years of each other may share quite a few parts?
Would you happen to know which Rockola models are the same as the 440, in that regard?
Thanks.

[Ron Rich]

I would GUESS, that most "400" series would be-- closer to the number "440", the closer in parts similarity ? Ron Rich