In the United States, a significant number of private mints produce bullion which is not legal tender and is targeted at investors and not at coin collectors - such as this one.
The 5g JM Bullion Square Gold Bar is part of a range of bullion products introduced in 2022 which are branded with the JM Bullion brand - a major US bullion and coin dealer; the bars are struck by Geiger Edelmetalle in Germany.
JM Bullion says about it:
In a new partnership with Geiger Edelmetalle, JM Bullion celebrates its growing presence in the precious metals industry with the introduction of a new series of Square Bars. These new products are available as both silver and gold bars for sale, each one featuring the beautiful touches that Geiger Edelmetalle uses on all of its Square Bar Series products.
Geiger Edelmetalle Square Bars have a number of impressive features that boost the security and enhance the visual appeal of each specimen. The bars have raised surface on the obverse that has a matte field with polished, glossy design strikes. The reverse field is slightly sunken with a glossy background and matte visuals on the design strikes.