[morzh]

I would not re-use the old coil.
Rational:

1. You have already done the major part of the job - unsoldering, removing the coil.
2. Under 100 turns will take 15 minutes to wind manually tops.
3. Main reason - if the wire was damaged (you often see how you take 2 turns off and it breaks then) in the beginning it is likely corroded all the way, and it often shows as discolored enamel, it is likely to happen again. And is also hard to solder - you bend the wire a little and it breaks.


My vote - redo the coil, it ain't bad at all.