I found this in my parents' warehouse. It's heavy. It's a commemorative item made of metal. It says it was made with the last molten steel from an open-hearth furnace. K23499 It says 1960 4-2, so I believe it's from 1960. I looked it up and found that in 1960, the open-hearth furnace operation, which had been running since the factory opened, was stopped. The factory that had been "making iron" and supporting the "city of iron" transformed into an iron processing factory after 40 years.