Very rare to find these early 'Lear Jet' original releases. In case yu didn't know the owner of the lear Jet company is who invented the well known 8 track tape player and tape, technically it was an improvement of a earlier format called the 4 track, I won't go into detail here tho.
Very pristine cosmetic condition certainly one of  the best you'll find and at this moment this is the only refurbished copy for sale, hopefully you know to never put those unrestored in your tape player!!
You may see tapes for sale that say 'tested' that really just means they put it in a player and sound came out but when the part of the tape where the 'sensor foil' is, that piece of foil will almost always come apart, at least around 90% of the time, remember most of these tapes are around 50 years old, if it doesn't come off then it very likely will the next time or two you play it. It is absolutely necessary to replace the sensor foil and pressure pads too on all old tapes
I have restored several hundred 8 track tapes, I do a very thorough and professional job. Not only do I replace the pressure pads (which is on about 95% of all tapes) but I also replace the sensing foil but then I go a step further and apply splice tape on the underside of where the sensing foil is, that is just extra protection so if someday the sensing foil ever fails the tape won't come apart and your tape player won't eat it up! I also remove the roller and clean it thoroughly and also the spindle it goes on, I also remove the reel and clean the spindle it goes on and both spindles receive a very light lubrication. The outside tape cartridge itself is thoroughly cleaned and if there are many bad scuffs I even go so far as to use a polishing compound to remove them, only if they are very distracting, I spend way too much time on each tape as it is but it's just because I want these to be treasured by someone who cares about the antiquated formats that are no more. I of course have to charge a bit more than some others but surprisingly in many cases I'm only a few dollars higher than ones being sold untested, which you really should NEVER buy unless you know how to do the necessary things that will need to be done on over 90% of them. Every tape after restoration is then put into the tape player and played all the way thru till the foil hits the sensor and changes tracks. You do not need to be even slightly concerned about these tapes functioning properly when you receive them. You do need to make sure your tape player is maintained properly tho, especially cleaning the capstan. If you're not familiar with proper maintenance take a bit of time and watch a few videos on youtube on properly cleaning your 8 track machine.