Hi all,
Looking to identify a Parker 75 lined pattern.

From my searching on the interweb I have found the following...

Grosse Côtes 8 parallel grooves.
Filette 16 parallel grooves.
Godron 23 parallel grooves.
Milleraies (thousand lines) 69 parallel grooves (yes, I counted them).

has anyone with knowledge of Parker 75 pattern names seen, or better still, know the pattern name for 30 parallel grooves?

30linebp.JPG

30 Line BP shown with 23 line (Godron)FP.

Thanks for any help.

Paul.