The four notes you've posted so far are all obsolete, so one thing you cannot to with them is take them down to your nearest moneychanger and exchange them for face value; they have no "face value" any more.
The first note is a 1 billion mark note from Germany. After losing WWI, the Germsn econmy collapsed and the mark went into hyperinflation. This is one of the highest face value notes they issued. Note that a "German billion" is 1 followed by 12 zeroes - what you folks over in America call a "trillion".
The little 5 cent note is a "military payment certificate". These were what soldiers stationed overseas during the Korean and Vietnam war eras were paid in, a special currency only the trops were allowed to redeem; this helped restrict the black market trading between the troops and the local civilians. "Series 461" indicate4s this is from the 1946 series and would have been issued to troops stationed in occupied Europe and Japan after WWII.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis