@lewm Did you notice a tiny treated hole near the spindle hole on SAEC mat?
Do you know how to use it ? The manufacturer was smart enough to offer this option, you can tighten up the mat to the spindle, but you need additional accessories that you can get with a NOS mat (along with the manual) and a nice box. I realized it only when i bought NOS (unused) mat, a complete set.
About NOS SAEC mat:
When i bought NOS sample in the box (with manual) i notices red tool and a small metal piece that allow to tighten up the mat to the spindle with a tiny screw (this is why there is a very small treated hole in the mat near the spindle hole). When you’re buying a used sample these parts always missed and i believe a few people seen it.
If you like scratched or damaged mats you can always buy them with 50% discount compared to MINT- or NOS.
This is RARE mat, it was made 40 years ago.
If you think the price difference between a used Technics SP-10 mkIII and a NOS (boxed) Technics SP10 mkIII will be just 10% then you’re living in the different reality. Some vintage stuff is impossible to find in NOS condition. Actually vintage hi-fi gear is highly collectible. And there is a collector’s value of the NOS gear.
I wish i could buy everything NOS just adding 10% to the price of the used items, but in reality the price goes up to 50-100% for a NOS records, cartridges, mats, turntables, tubes, whatever vintage