Found a penny. Could be worth anything?

Sorry, but you're fooling yourself if you think you've found a fortune. Condition is everything, and you can't look up values of coins in mint condition and think they come anywhere close to applying to a worn coin.

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<What I see online sells anywhere from 20.00 to a hundred dollars> Really? Because in 20 seconds I found this set of all three mint marked 1948 Lincoln cents in *uncirculated* condition for $7.44 shipped: http://www.ebay.com/itm/1948-P-and-D-and-S-BU-Linc... And I'm betting what you're holding looks nothing like that. The main point being that depending on condition even a low mintage coin could be worth $1 worn or $1000 uncirculated, and 1948 wasn't exactly a low mintage year.

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The second point being that don't look at what sellers are hoping someone will pay, look for what things have actually sold for. (on eBay: Advanced Search > check Sold items box). What you have is worth a few cents. It's worth hanging on to for the copper value if nothing else, since cents are now mostly zinc, but it won't pay for college.

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What sells online is in much better condition than what you probably have. This is a big problem with novices - they don't understand coin grading. If your coin was in circulation, it's probably nice and brown and millions of them are sitting in peoples jars, coffee cans, junk drawers....317 million of them were produced at Philadelphia (no mint mark). It's worth more than face value just for the copper in it, but the collector value isn't more than five cents.

Sounds like you answered your own question

yes