Doral is an old New York operation that has been around since 1972 and still in business out of Freeport, NY. They are a family owned and operated business providing full service precious metals refining nationwide. To my knowledge they no longer pour silver bars, nor have they for quite awhile. They do, however, still pour gold bars. Here is a 5 and 10 oz example. These are quite scarce and highly collectible.
There are a few smaller bars that exist, but they are extremely rare and sought after. I’m fortunate to have a 2+ oz example to share here.
Vintage Silver Bars 