I have a Sinbad with the original coils. The wrapper has the part number of A-17876.
I am unable to measure voltage since the machine is in pieces at the moment.
[edit]: Here's a chart with some more information, which includes wire gauge, windings, and resistance.
http://www.pinwiki.com/wiki/index.php?title=Gottlieb_System_1#Solenoids_and_Relays