Keith Partridge was my very first celebrity crush!
I thought of a few: Jovan Musk for Men came to mind initially, but I think this came out a few years after The Partridge Family went away. I think Brut (what a weird name) and Old Spice were pretty popular back then...*involuntarily gags* but they don't seem very "Keith".
My final thought is Aramis, which was extremely trendy back then, and Keith was a trendy kind of guy.
What are your thoughts?