vintage cast iron scale weights, antique numbered graduated rounds ounces & pounds

Lot of antique scale weights, late 1800s or early 1900s. I have no idea what type or brand of scale these were meant to fit, but I love the beautiful old numbers on these pieces!

There's four weights in the lot. Smallest measures 1 3/4" in diameter x 1/4" thick, largest measures 4 1/4" in diameter x 1 1/4" thick. The smaller two are ounces (four ounces and eight ounces). The larger two are pounds (two pounds and four pounds).

These weigh up perfectly on my digital scale, so they're usable pieces yet.