I've had this block for a couple of years and will attempt to post some pics of it. Casting Number = 485428, Date Code = K091. Since it was sitting beside a balance scale, I weighed it out of curiosity. Tipped in at 179.5 lbs without any main caps. Also measured the thickness of the main webs at the dowel pin locations. They ranged from 0.892 and 0.901 inches. Hope this helps someone.
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