His first work was to duplicate sterling pieces by special order. And because the pieces he duplicated were generally English sterling pieces, the original Tuttle pieces are dated in the English custom, with the crest of the reigning monarch of the times, to indicate the time period.
What makes Tuttle sterling pieces different and unique, is the fact that beginning in the 1920’s, during the term of president Calvin Coolidge , - in order to indicate the time period the pieces were produced - he changed the marks, to what is referred to as presidential marks.
The presidential marks consist of a crescent containing the initials of the incumbent President of the United States, starting with CC in the term of Coolidge, and fallowing with HH in the term of Herbert Hoover and so on.
Under the crescent is a Roman numeral, which may indicate, either in what term of the presidency it was produced, or - by some accounts – it stands for the exact year of the presidency it was produced.
Over the crescent, the mark contains a Pine tree, this is another patriotic symbol, as it is the same mark, as the Pine Tree Shilling the forth and most famous of the earliest American coin’s, form the New England era.