Home Forums Reloading Bullet Casting Linotype strips???

Picked up some linotype from a friend who just acquired a large amount. It’s a mix of small cast blocks typical of what I’ve encountered in the past and strips like the ones pictured below. The strips vary in length and thickness. Some are around 3/16” with square or round cavities running lengthwise. The width of the solid strips also vary somewhat. Has anyone ran across lino shaped like this before? Anyone know what it was used for or why it’s in this forum. Just curious, I can get more pics this evening.