I recently built the rear wheel for a fixed gear with an 88mm high rim, and now I've built

its matching front wheel.
This one is a 50mm high carbon tubular rim.

HB-7600 28H CX-RAY reverse radial spoke pattern.
Since it's not 36H, there's no NJS stamp on the hub shell,
and since it's not a semi-track rear hub either, the hub doesn't have any directional markers to determine left or right orientation.

its matching front wheel.
This one is a 50mm high carbon tubular rim.

HB-7600 28H CX-RAY reverse radial spoke pattern.
Since it's not 36H, there's no NJS stamp on the hub shell,
and since it's not a semi-track rear hub either, the hub doesn't have any directional markers to determine left or right orientation.