Complete set of two HP recovery DVDs, as pictured. You will receive two DVDs: a bootable Win 10 Pro 64-bit DVD and an Application & Driver utility DVD for the ProBook 430, 440, 450 or 470 G3.
These DVDs do not have a Microsoft Windows "CD key" or license number. The HP laptops that these DVDs support were sold as a business class device that included a valid Windows serial number built into their firmware. These DVDs cannot be used to rebuild laptops without a built-in license.
While the HP app recovery DVD does have certain specific model numbers assigned, they do tend to be pretty universal for HP business-class hardware.