Issued as part of the ongoing Bicentennial celebration, the 13Â¢ State Flags pane was a first in U.S. history. This was the first time a pane with 50 face-different stamps was issued.
NON-VENOMOUS. NON-VENOMOUS. Description: A greenish-brown snake with a diamond-like pattern on its back and dark bars on the sides of its body. The belly scales are yellow with dark markings on the sides. Males are smaller and thinner than females and they have small bumps on their chin.
The grass snake is the largest species of British snake, and is identified by its olive green body and darkish spots or streaks on the flanks. However, colouration can vary. Grass snakes have a distinctive yellow and black collar behind the head and have round pupils. They can often be confused with the adder which has a more thick-set body and a distinct zigzag down its back, and it also has a vertically slit pupil. The adder is venomous, whereas the grass snake is not.