A Rare Bird - 1921 was released on:
USA: April 1921
Rare Bird - 1920 was released on: USA: October 1920
There are no extremely rare dates, but the three most valuable are 1921, 1928 (no mint mark) and high-quality 1934-S coins. Please see the Related Questions for specific values.
Rare Bits - 1920 was released on: USA: 4 April 1920
Rare Bits - 1926 was released on: USA: 29 August 1926
Medium Rare - 2010 was released on: USA: 7 March 2010
Medium Rare - 1987 was released on: USA: 15 March 2010
A Rare Boarder - 1916 was released on: USA: 8 December 1916
Rare Anatomy - 2010 was released on: USA: 22 March 2010
Rare Bird Alert was created on 2011-03-15.
Sympathy - Rare Bird song - was created in 1970.
Rare Fish in the Aquarium - 1902 was released on: USA: November 1902
A 1921 Lincoln cent is not considered rare or even scarce. But, pre-1934 Lincolns are getting a little hard to find.