I have a 770 Black and orange running gear golden demonstrator Case tractor. I would like to know how many years JI Case manufactured the 770 series. And what year or years was the 770 black and orange golden demonstrator manufactured. My 770 serial number is 8677268. If anyone has this info please get back to me.

I agree with Joe Young, that your Golden Demonstrator, should be a 1970, Butttt, CASE was nortorious for using up inventory, etc.
I as a CASE dealer in the mid 70s, were repainted and repowered many 770-1070s with industrial 336T skid engines which we purchased from Sand Hill Equipment, in Bassett NE. The 970s and 10s, we bolted on manifolding, and oil coolers from the 1175 tractors, and modified the air intake systems, with increased sized filters and Turbo II intake systems. We then painted the tractors, from anything from Demo's to "Stars and Stripes", to my favorite which was a 70 Series with white sheat metal and a black belly with custom decaling. When I get a chanch I will post a pic. (don't hold your breath)
I threw in a pic. of our 71 770, not a GD. (for you who know, the cab is not original to it. It came off a 77 1070. The 770 was an open station 8-speed.
We as a dealer ordered a Golden Demo 870 PS CAB in 1970, and an 870 Black Knight in 71. My good friend, a neighboring dealer ordered 1070s and a 1470 BK which came to him with all the paperwork, but it was a standard 2 tone. Between the 2 of us we sold 9 "DEMO" tractor 870-1470, including 970s, and the 1170 BK,(Mel, that one came from your home 20), but no 770s. We were able to transfer them in from other dealers who hadn't sold them during the floor plan period, or were willing to let them go.
You can get further info from Rich Torwick a CNH. Sorry I dont have his e-mail handy at the moment. I'm sure someone else does.

I just read that the 1st 770's were 1969 models, that came from the book "150 Years of J.I. Case". And I seem recall an old post on this forum saying that the reason the cabs were Desert Sunset on the Gold Demonstrator was a mix up in paint color by the cab manufacturer... They were supposed to come black, but they were painted Desert Sunset by mistake. Is yours gas or diesel? Powershift or 8 speed?

You're correct Paul... I must be dyslexic tonight.

Your tractor is a 1970. The "Gold Demonstrator" was something a specific dealership ordered. Does your tractor have a tag on it stating which dealership it went to?

Bought new from Dunbar Tractor Company, Battleboro, NC. Dunbar Tractor Co is no longer in business and Battleboro, NC has been incorporated to rocky Mount, NC 27801.My 770 golden dem. has a 267 cu in motor, diesel, power shift transmission.

Your 770 is a 1971 model according to serial #.The 770's were produced from 1970-72.With a total of 1691 built.I thought golden demonstrators were 1970 only then in '71 the demonstrators were all called black knight's,but I'm no expert. Paul