Hey Rick,
Here is a link that will answer a few questions on the design and dating, looks like early to mid 70's
I really like those years as average guys were designing some really nice flying airplanes..........

https://www.rcgroups.com/forums/show...-resource-page

Cores are in usable shape as well as most everything in the box, I'm excited about this one.
I'll not go so crazy on wild colors on this one, basic seems to make this design pop..............
I'll most likely use a Super Tigre again, I have plenty of headers for the ST 61-75