High voltage from alternator

[hevymetl]

Finally got my '66 registered and on the road. It seems that it has the internally regulated alternator swap done already since there are no wires going to the old voltage regulator. I installed a new battery a couple of weeks ago since I didnt know how old the current one was. I tested the voltage at the battery and at the back of the generator. At idle I got over 15volts, and at high idle I get high 16s. At idle with lights on I get mid 13s. Im thinking this is pretty high no? What say the experts? Thanks in advance for the help.

John