hear is you answer:

how old is it?... for huffies, the 1st number of the serial number is also the last didget of the year it was made. ex: HC9857463 would be either 59, 69, 79, 89, or 99. just look at some of the other components on the bike to help you figure out if it was made in the 60's, 70's, 80's or 90's. that is how i figured the year on my 89 huffy gv cruiser.

how much is it worth?... it is a huffy. maybe something from the 50's or 60's would be worth a little something, but other than that they are not known for their high resale value.