Looking for information on United States Silver Corporation 1 OZ California Gold Bar.....

Hi Folks, thanks for looking.
I have one of these bars and it has a group of placer nuggets in the gold pan. I've been told that there are five varieties of this bar, but I'm not able to find out much about it. By far, the majority of these on ebay have 'empty' gold pans.
Is anyone into USSC art bars?
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Not so much into the USSC but the Archie kidd 5th edition has it listed as USSC-154G or 154GV1

@rte582 Thank you so much for that information.