It is not simply a rebadged 2100. There are some subtle differences like the 6 band switch vs the 3 band with the hi/low button. Dual final vs single. The button for the RB. The 2100 has CW where the Pluto does not.The first Galaxy PLUTO rigs were simply Galaxy 2100s with a new name. See SECRET CB Vol. 26 on CBTricks for alignment, board layout, & mods. Main board number EPT360011Z.
If your PLUTO has the Frequency counter board mounted in a metal box, then it's the same as the 2100.
Lots of good Galaxy 2100 info here
https://www.transmission1.net/viewtopic.php?t=55153.
Good luck, 73s.
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