These are in great shape for their age. They're probably around 20 years old. Each tuner button has a slight bit of tarnish on one side. I'm guessing they were sitting with that side up for many years. One tuner button has a pen tip-sized pit on the gold plating. Other than that, they are great condition tuners and of course they have that Schaller top notch German quality!
These are available from AllParts.com for $155 in chrome and $165 in black. They don't even have gold available! I'm asking $60.


More pics:
Schaller M4S Gold 2x2 Tuners pictures by moondoggy3 - Photobucket