Foldover errors are very collectible, and retail at upwards of $300.
face value
No 1934 US $10 bills were printed with red seals. However a special series was printed with brown seals for use in Hawaii during WWII. If your bill has HAWAII printed on the front and back, please see the question "What is the value of a 1934 US 10 dollar bill with HAWAII on it?" for more information.
U.S. currency is printed in a 3-step process :The back is printed first and taken to a drying room.Next the front is printed and then allowed to dry.Last, the serial numbers and Treasury shield are printed in an overprint press.So you can see it's virtually impossible for a partialback side to be printed on the front side.I suggest you take it to a coin show and have a few currency dealers look at it to figure out what you have.
$50.00
A 2001 20 dollar bill that has been printed wrong would be worth 40-50$
There were no 1968 Australian Five Dollar notes printed.
There were no Australian Fifty Dollar notes printed in 1984.
a million dollars
There weren't any printed with that date.
Your 5 dollar bill only printed on one side is worthless. It is counterfeit. It was made by a copy machine.
Bills printed in 1969 and later are only worth face value.
If there were one it would be priceless, because U.S. dollar bills were not printed with that date.