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‘collectoseur’ has been looked up 235 times, commented on 1 time, and is not a valid Scrabble word.
jeromicito You can read the blog post (here) where I first came across this word. Grant Petersen describing a certain type of collector connoisseur, which I think at 12:51am on a Saturday is brilliant: link
http://www.rivbike.com/blogs/news_post/204 Mar 6, 2010