These clippers are thirty years old, but they haven't been used in decades, were only lightly used, still function perfectly and they were manufactured at a time when a lot of tools, Oster clippers definitely included, were made to last. There is one blade, 4mm, I believe, that comes with them.
As I expect a lot of interest in these clippers, I will NOT gift them to first person who asks. I will wait a day or two, collect names, then draw one out of a hat.