The key test was on the objective. Although it is in need of a thorough cleaning, a view of distant tree branches was sharp and clear:
Rough measurement when in focus(from the objective to the eyepiece) was 96"...so this is an f/16 instrument.
Star test on Capella and its star field later in the evening showed sharp pinpoints and no chromatic aberration.
Sure looks like a lot of purple in this picture for “no chromatic aberration”.