Of course, all this assumes the bike has the original component.
The most likely components to be original are the stem, handlebars, seatpost, and brakes.
The code consists of a letter usually followed by a number.
The letter is really the only thing helpful to collectors; the numbers are likely related to the printing run. and New York Consolidated Co., at the time subsidiaries of USPCC, also used these same codes. became part of USPCC they also began to use the codes.
Use the chart below to determine the year the deck was printed.