What value did Max Planck calculate for Planck’s constant?

When Max Planck first evaluated Planck’s constant in 1900, he calculated a value of $6.55\times {10}^{-27}$ erg-second.1

This initial calculation was part of his work on blackbody radiation, which led to the development of quantum theory. In modern scientific units, the constant is defined as exactly $6.62607015\times {10}^{-34}$ joule second.2134