I have been working on guitars for close to 30 years now, and have collected a lot of parts. I will be selling off all of my machine heads in the next few months. Here is a great example of a set of tuners that I ended up pulling off a guitar in the early 2010's. My guess to the age is probably mid to late 2000's if I had to guess.
100% functional
6 tuners
6 washers
6 nuts
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