Dear V1....Ooops
The Boeing to my knowledge has not used any fixed type of Design Eye Reference Mark but used a guide instead to locate this reference.
This Reference is same on B737-classic and NG fleet. I quote below from the Boeing FCOM:
"Pilot Seat Adjustment
Adjust the seat position with the appropriate controls to obtain the optimum eye reference position. Use the handhold above the forward window to assist. The following sight references are used:
• Sight along the upper surface of the glareshield with a small amount of
the airplane nose structure visible (A)
• Sight over the control column (in the neutral position) until the bottom
edge of the outboard display unit is visible (B)."
Sorry , the picture showing (A) and (B) could not be copied. You could refer any FCOM for that.
Hope that keeps you informed.
Happy flying.