From the list made by John Davis /Hal Herman, I can't see yours but it may be of use.
Cheers
Jim
Caliber/Size/VPH/Lift Angle
ZENITH 11 51
ZENITH 88.8 51
ZENITH 83/4F 50 01’
ZENITH 106 52
ZENITH 40 52
ZENITH 120 52
ZENITH 135 52
ZENITH 175 43 30’
ZENITH 177 40 30’
ZENITH 18-23-3 A 42
ZENITH 68 42 11’
ZENITH 69 42 11’
ZENITH 101 12 ½ 19800 50
ZENITH 535 9 18000 52
ZENITH 405 11 ¼ 36000 52
ZENITH 408 11 ¼ 36000 52
ZENITH 1110 39574 21600 51
ZENITH 1120 39574 21600 51
ZENITH 1724 7 ¾ 19800 51
ZENITH 1725 7 ¾ 19800 51
ZENITH 1730 7 ¾ 21600 51
ZENITH 1731 7 ¾ 21600 51
ZENITH 1733 7 ¾ 21600 51
ZENITH 1740 7 ¾ 21600 51
ZENITH 1741 7 ¾ 21600 51
ZENITH 2310 10 ½ 18000 47
ZENITH 2320 10 ½ 21600 47
ZENITH 2530 11 ½ 21600 54
ZENITH 2531 11 ½ 21600 54
ZENITH 2532 11 ½ 21600 54
ZENITH 2540 11 ½ 21600 54
ZENITH 2541 11 ½ 21600 54
ZENITH 2542 11 ½ 21600 54
ZENITH 2552 11 ½ 21600 54
ZENITH 2562 11 ½ 28800 52
ZENITH 2572 11 ½ 28800 52
ZENITH 3019 13 36000 52
ZENITH 3029 13 36000 52
ZENITH 3841 27 18000 40
ZENITH 5011 22 18000 42