Transformer 1-65-606-5-40?

Hi all -
Can anyone tell me anything about a transformer labeled:
1-65
-606-5-40
This is in a highly bastardized Fender Super Champ I've been given to work on and I just need to find out a little more about it. The wire colors don't seem to match any I've seen on the M-M schematics, but someone had marked the transformer as "Music Man 50" in red paint.
Thanks for any help -
Mark

Contact Andy Turner at Mojotone.com and see if he can help ID that tranny for you.

Thanks John - I'll do that.

Update (in case it ever helps someone):
I found reference to the "1-65" transformer in the Music Man service bulletins #3 & 4, kindly made available elsewhere on this site (thanks!).
Apparently it is an early version of the "100-65" unit.