Race Face Turbines, which year?

[FluffyChicken]

Hand etched are earlier, 1000+ I think are just later than 900+
That's about it as far as I know? Never seen any sort of decoding.

 

[vtwinvince]

I would guess those around '96. The first production batch had the badging read just RaceFace, no forged. These are hard to find.