1923-24 style (long plate, small star)

 
1923-24 style (large star)

1923:

• Another undated base plate issued. 700,000 prs. were made initially.
• "TEXAS" was written down both ends of the plate. A lone star separated the numbers, a feature which continued until 1944 (except 1936). 
• No validation seal was needed for 1923.
• The earliest known sample plate is of this design.
• Later, 300,000 more plates of the same design were made, except the plate is noticably shorter.  (plate #s 700-001 to 999-999).  Sometime between 933718 & 936696 the star became larger.
• Plate color: white on black.

• A seal was used to validate plates for 1924.
• Seal color: white on red

• First yearly license plate. 
• "TEXAS" down left end, "1925" down right.
• Commercial (COM) plates introduced.
• Trailer (T prefix) plates introduced. DOT literature suggests these were also used for Tractors until 1928.
• Passenger plate color: white on maroon.

• "TEX-26" down right end.
• Motor Bus plates introduced (MB prefix), 4,158 issued.
• Passenger plate color: black on grey.

• "1927" down left end, "TEXAS" down right.
• First verified use of serial letter (A).
• Passenger plate color: white on green.

• Plates bore the legend, "front" or "rear" until 1930.
• "FRONT" or "REAR" down left side, "TEX-28" down right.
• 7-digit plates issued for the first time. Serial letters seem not to be used again until 1931.
• For this year only, Commercial plates issued in four separate series, based on vehicle weight.
• Trailer plates also have 8 different weight classes. 
• Passenger plate color: white on brown.

1929: 

• "FRONT" or "REAR" down left side.
• "TEXAS-1929" along bottom
• Cardboard dealer tags in use.
• Passenger plate color: orange on black.