Is this Rare?

[Vlad]

Digging around the lab today I found my MS-DOS 6.2 manual with the Certificate of Authenticity inside! Its still in perfect condition. Is this a rare thing or is it just uncommon. I never ran across a Cert of Auth of DOS before....

-V

[Terry Yager]

I dunno how rare, but v.6.20 fell victim to the Stax lawsuit, so it was quickly replaced by v.6.21 (PCDOS) & 6.22 (MSDOS). I imagine fewer copies were published than some other versions.

--T