Placer Sierra out of Rocklin, CA, was another one of many California refiners back in the late 70s as a gold and silver reclamation company. They were in operation from 1979 to 1985 with their refining done in Orangevale, CA. Their ingots have been found in sizes ranging from 1 oz to 100 oz. They used to be commonly found in 10 oz, but with the growth in new collectors coming into the market, you don’t see these often.
Here is a rarely seen 1 oz class example shared by Jon M. Love this piece!
Wow, that is a very nice 1oz Placer Sierra. I have 2 later examples. Both even weight and finished a little nicer. I dig this rough odd weight 1 tho!