Yes, it is a plural noun. It can refer to classic books, classic movies, or to the literature of Greek and Roman times.
The word 'do' is not a pronoun; the word 'do' is an auxiliary verb, and a noun, for example:Verb: We do have the classics on DVD.Noun: Spring is the time for a new hair do.
Orion Classics was created in 1983.
Orion Classics ended in 1999.
Radio Classics was created in 2002.
Live Classics was created in 1992.
Kids' Classics was created in 1991.
Hooked on Classics was created in 1989.
EMI Classics was created in 1990.
Konami Classics happened in 2009.
Remix Classics was created in 1991.
Classics of Love was created in 2008.
Corgi Classics was created in 1956.