Nirvana, Bleach (1989)
Nevermind might be their most famous album, but their debut record is the most valuable one. They came out with two versions of this. If you have a copy of the original pressing in white, you are sitting on $2,500. Meanwhile, the 3rd pressing with the 7” blue vinyl and 12” red and white one is worth $1,100.
XTC — Science Friction (1977)
XTC is a British new wave group that released “Science Friction” and “She’s So Square” as a 45 RPM single. According to reports, they only had 50 copies made before releasing it as a 12”. The original 7” one can fetch you $2k. It launched their successful career, after all.