#1:
Oregon Trail Memorial Half DollarsC'mon ... you knew I was going here ... right?

Considered by many ... myself included ... to be the finest design of any USA commemorative, this coin IMHO has a deserved seat in the debate for most inspired design of any USA coinage.
The designers of the Oregon Trail half dollar were the husband/wife team of
James Earle Fraser and
Laura Gardin Fraser ...
James created the side with the Conestoga wagon trekking westward towards the setting sun ... Laura designed the side with the American Indian native portrayed as as suggesting the wagons stop the trek.
Both of these early 20th century USA coin artists also have other claims to fame ... James for his design of the
Buffalo nickel and Huguenot-Walloon half ... and Laura for her design of the 1921 Alabama half and the 1922 Grant half.
Laura Gardin Fraser was by 1926 (year of original issue for the Oregon Trail) the grand dame of USA commemorative design.
Here is a fun fact regarding Ms. Fraser work ... she was the winner of the 1931 competition to design a commemorative quarter in honor of George Washington. Then-Treasury Secretary Andrew Mellon rejected her winning design in favor of a design by New York sculptor
John Flanagan ... which went on to become the 1932
Washington quarter ... which out-lived it's intended 1 year commemorative status and survives to this day!
Commemorative fans were pleased to see justice served when Ms. Fraser original 1931 design for the quarter was minted in 1999 as a $5 gold commemorative in honor of the bicentennial of Washington's death. Find a photo of the $5 gold coin ... note that should have been the quarter in your pocket since 1932.

Anyways ... back to the Oregon Trail half ...
Minted from 1926 through 1939 ... there are fourteen separate date/mm combinations of the Oregon Trail available. Many collectors aspire to acquire the entire 14 coin set as a specialty within the classic US silver set.
Net mintage of the entire 14-coin set is 202,928 coins ... the vast majority of which were issued in the first year (1926) ... with that date accounting for 131,010 pieces.
Original 1926 issue price was $1 ... which increased to $2 in later years as the promoters tried to create a sense of rarity in the later dated issues.
I have four Oregon Trail halves ... two MS and two circulated. Still looking for a truly well circulated example. Let me know if you find one!
Here is my PCGS MS67/CAC 1938-D Oregon Trail. Net mintage of 6,005 coins. Numismedia current FMV is $720.

This thread has been great fun ... Thanks to GR58 for the idea ... and to all of you for your beautiful and inspiring contributions.
David