Freakin' WOW.......
I haven't been on this site in ages, but saw your post and had to check it out-and now reply.
My strangest dreams of finding a vintage machine was always that I would find a NIB Simplicity/Speed Queen TT in some old barn or antique shop for next to nothing. For me, Harvest Gold would be the greatest colour find.
But wow, here you are with this amazing find!
As a fellow owner of such type of machine, you will have a lot of fun using it.
Unfortunately, mine has developed some problems and is not usable at this time, but I still plan on keeping it and getting it fixed and running again.
The agitation in this machine is simply amazing and is true Speed Queen cleaning all the way. Even the SOUND is Speed Queen all the way!
I would think this model is definitely closer to 1980 though, as the earlier models had a grey coloured agitator as opposed to the later white coloured agitator.
Enjoy your new find and happy Twin Tubbing!!!