The product is a circulated $10 1902 Date Back National Bank Note from The Allentown National Bank of Allentown, PA. It has been certified by PMG with a grade of 15, featuring signatures by Lyons and Roberts. The banknote is from the United States and has a serial number of D356466 / 10437. This collectible item holds historical value as a piece of paper money from the early 20th century.
Of the more than 12,000 banks that issued currency under this system, only 1,196 of them were from Pennsylvania National Banks. Also only about 50,000 Pennsylvania National Bank Notes have been reported within currency groups. The most common are from 1929.
As of current there are 131 known of this specific note that have been graded 15 by PMG.
A 1902 $10 National Bank Note from The Allentown National Bank in Pennsylvania is a collectible piece of currency with Charter #1322. It is part of the "Series of 1902" and features a portrait of President William McKinley on the obverse, the number "10" and "NATIONAL CURRENCY" text. 
While the exact design details on the reverse (such as a specific vignette like Liberty and Progress) and the exact note's condition can vary, these notes are historical artifacts from a time when banks issued their own currency backed by government bonds. 
Key details of the note
Bank: The Allentown National Bank, Allentown, PennsylvaniaCharter Number: #1322Series: 1902Denomination: $10Issuer: National Bank Note system, meaning the note was backed by U.S. government bondsObverse (Front): Features a portrait of President William McKinleyReverse (Back): Depicts a vignette, which can vary, and the text "NATIONAL CURRENCY" 
Historical context
Currency: National Bank Notes circulated from the 1860s until the 1930s, when they were retired during the Great Depression in favor of consolidated Federal Reserve Notes.
Design: The intricate design was a form of early security and advertising, showcasing both the issuing bank and the U.S. government's backing.
Collectibility: These notes are considered valuable historical artifacts and are sought after by collectors, though the value depends on factors like rarity, condition, and the specific bank.