Have just acquired an telescopic sight that doesn't have any name ID on it.
It is a variable 3-9 but with an unusual reticule. Like a standard "duplex" except the lower fine crosshair has six bars across it for, I am guessing, range holdover. As in the bottom half of the reticule are six circles from left to right, in diminishing sizes, marked underneath then on the reticule 50, 75, 100, 125, 150, 175.
Any ideas, please, and what rifle sport would it be from?