airgun world nov 1979 , rod lynton did a article on reflector sights , one of which was the aimpoint,
made in sweden, introduced in 1975, but only started selling in this country 1979,correctly termed a mirror reflector sight, uses an led battery
also in airgun world dec 1980 again rod lynton used one on the test of a webley osprey, he fitted the sight with a 3x magnification attachment
airgun world (again !!) july 1979 the back cover has a full page ad for the aimpoint, rrp £94 plus vat the ad reads

aimpoint is fast ! unlike telescopic and iron sights eye position is not critical, so no time is lost lining up with aimpoint. the electronic aiming dot seen through aimpoint need not be centered in the eyepiece. parallax-free,the dot will appear to be the same distance as the target. this makes aimpoint an excellent aid for hunting fast moving game. place the sharp red dot on the target and shoot
the brightness of the electronic dot is adjustable, and there is a variable polaroid filter to alter the contrast of the target area. the dot is small , obscuring less of the target than the cross hairs of a telescopic sight. thus you can use aimpoint comfortably in bright sunlight or dim twilight, and accurately for short or long shots
the electronic dot is produced by a light emitting diode powered by long life mercury batteries, it does not rely on external light to operate correctly. the high quality optics are anti glare coated. the case is a rugged light weight alloy, and is sealed against dust and condensation. the aimpoint electronic is proofed against shock even on the most powerful rifle

phew !! thought id never finish that
all the best
paul