For the period, these were some pretty good scopes that saw action in WWII and Korea. Ten times better than the Weaver 330 series scope. Lyman was the primary manufacturer of the M81 and 82, but Wollensack was also a contractor that made the M82. Does anyone have any info as to when Wollensack made these, how many, and if they were better/worst than the Lymans? And who got them: Army/Marines? How can you tell them apart?