The original four issue comic series from Frank Miller and co; which has been collected variously as: Batman: The Dark Knight Returns, in soft and hardcover formats, 1986 on.
Reprint editions exist as follows:
#1, 2nd to 4th prints
#2-3, 2nd and 3rd prints
#4, 2nd prints.
All later printings are identified inside as such, with the exception of #2, second print.
#2 first prints have near matching grey backgrounds on inside cover and first interior;
with #2 second prints, the inside cover grey is much darker.