Mingus Ah Um, overdub pressings

Hey gang,
Can anyone confirm or deny if the US 1971 Columbia pressing of Charles Mingus - Mingus Ah Um has the overdubbed bass? Columbia ‎– CS 8171, Vinyl LP, Album, Reissue, Stereo.
Red label with "Columbia" in orange repeated along edge , Along outer edge: "® "Columbia", [logo] Marcas Reg. Printed in U.S.A."
Thank you!!

 

What is this pressing that you speak of? Maybe a little more detail for us that don't know.

 

Updated original post.. Sorry.

 

Overdubbed bass?

 

Maybe I'm misinformed, but read that Charles Mingus overdubbed some of his bass work to accentuate sound on albums. I could be wrong though...

 

Never heard of this

 

Maybe it was just on The Quintet - Jazz at Massey Hall.
From Wikipedia:
Mingus took the recording to New York where he and Max Roach dubbed in the bass lines, which were under-recorded on most of the tunes, and exchanged Mingus soloing on "All the Things You Are".
A 2002 reissue, Complete Jazz at Massey Hall, released on The Jazz Factory label, contains the full concert, without the overdubbing