Are these worth a premium or with the history are people passing on collecting these? Dealer said they are around 11.50 ounces each.
Old pour bars sell really well on ebay, check it out. There's a couple links on that company, they may not be too rare, idk. Check out that link, I'll leave what it says!------------------------------------------ They have an interesting history to say the least. They were a refiner out of Utah and refined silver from used x-ray slides and other film products. In 1983 the owner was indicted on manslaughter charges after an employee died on the job from cyanide poisoning. At that time there were many refiners operating without strict safety protocols. This incident brought change to the refining industry as it related to safety and compliance. https://vintagesilverbar.com/2020/05/02/b-r-mackay-sons-inc/