i screwed up and need help identifying this part.

[Electronic M]

I think the single part version takes advantage of the common core to preform additional noise canceling.

I'd check and reinstall the original if good.

As a general rule I never replace anything other than tubes and caps without testing unless the part is obviously destroyed beyond doubt.

I usually test tubes and caps if not paper type to keep from wasting money on replacing parts that still have life left....Yea, I'm a cheap SOB.