OK, ASKFAP, if the question is if these acft have N2 CBīs, the answer is yes and no.
No, the 737-100 and -200 doesnīt have a CB to interrupt N2 indication. But yes, they do have a N2 CB - related to illumination (located on P6 panel)
This is pretty straight forward, as N2 (and N1) on this kind of acft are only tacho generators (remember that we still have the information in case of a battery start).
From Boeing maintenance manual, we can extract the following paragraph (AMM section 77 - Engine Indications, 77-12-0, page 2):
"The engine tachometer system operates on self-generated electrical power. The airplanes electrical power is required only for the integral lighting of the tachometer indicators".
I hope this clarifies a little bit more!
PP