I believe the 90's cent is a 1992, but my microscope isn't working so I may be wrong. This coin with missing numbers and letters, do you think this came right from the mint? And the 1948S cent....Notice how the "L" in LIBERTY is tilted....Again from the mint? Thanks ahead of time Guys!
The tilted L is due to a worn die edge. Very common on pre-1969 cents. Where the field curves upward to meet the edge, there is no 90° border left due to die wear.
I would agree that the greaser is a 1992, but it is just a greaser and fairly common, so the date wouldn't be very important, IMO.