That's a Series 1. Can tell because of the solid copper wire. The Series 2 is a dual primary with stranded copper wire..
Best not to interchange them because the accessory voltage off the secondaries is different for Cylon meters or a VU meter light PCB.
If I read Joes documents correctly, the display winding is 12 volts. The EBAY transformer secondary is 7-8 volts. I can't say if it will drive the display or not. It will drive the analog meters lights LEDs.