Farmers & Merchants State Bank of Shamrock                              First National Bank of Shamrock

These two banks are the two largest buildings in town.
Compare the configuration in Matador.

The First National Bank of Shamrock was chartered as 7306 in 1904. It printed money to the end of the period of National Banks, and in 1998

The bank printed $92,750 in 1902 Red Seals and 1902 Date Backs, but the census records no notes from this bank.
In 1935, only $150 was outstanding.

However, there is now this at the 2024 FUN auction

"Shamrock, TX - $50 1902 Date Back Fr. 667 The First National Bank Ch. # (S)7306 PMG Very Fine 20.
An incredible new discovery which may be the single rarest large size Texas note we have had to offer during the past few years. It comes from the sole issuer in this Texas Panhandle community and it is truly a miracle of survival. The First National opened in 1904 and issued just a small quantity of $50s and $100 before giving up its circulation privilege shortly after 1914. As a result, the bank had a mere outstanding amount in 1935 of $150. Amazingly, a note from that small amount has survived, and we are pleased to offer to the collecting fraternity for the first time tonight. It represents a bank and town that has eluded all of the major Texas collectors over the years including Carter, Philpott, Everson, Ivy, and many others. Fortunately, it is a pleasing mid-grade $50 with nice color and an attractive overall appearance. It does have an inverted "Farmers & Merchants State Bank Shamrock, Texas" rubber bank stamping on the back and a few pinholes. They are mere trifles when considering the rarity and desirability of this Texas trophy note."