Centuries: 1st century BC - 1st century - 2nd century
Decades: 0s - 10s - 20s - 30s - 40s - 50s - 60s - 70s - 80s - 90s - 100s
50 51 52 53 54 55 56 57 58 59
Sometimes the '50s is used as shorthand for the 1950s, the 1850s, or other such decades in various centuries
