First up is a very scarce and highly sought after refiner, Nevada Smelting & Refining. These are incredible pieces. I wish I had more information on them. They are uniquely stamped in grams.
Next up is a National Mint Corporation which for a long time was thought to be Nevada Mining Corporation. A friend and fellow collector, Freddy V. was nice enough to share the pic below showing assay paper with hallmark. The company appears to have been based in San Diego, CA in the early to mid 1970s.
Next up is an extruded piece from Northstar Mint. These are highly collectible for the kit kat lover.
Last up is a beautiful extruded piece from New Hope Gold & Silver. This company has a very interesting history, not uncommon to many others who committed fraud and securities violations in the precious metals space at that time. This company operated out of Bucks County, PA. The owner was arrested for fraud having bilked investors out of more than 900k back in 1981.
https://www.poconorecord.com/article/20010416/News/304169990
Vintage Silver Bars 