[ArmoredCav]

Correct.
The First Naval Jack has an uncoiled snake with a background of red and white horizontal stripes. The yellow flag is the Gadsden flag (still a beaut though).

[kjenerette]

From the same source as posted above; the following is useful information about the variety of Don't Tread on Me Flags that were used (in any event, Christopher Gadsden's was the first official design):

The Gadsden and other rattlesnake flags were widely used during the American Revolution. There was no standard American flag at the time. People were free to choose their own banners. One of the most interesting variations is the flag of Colonel John Proctor's Independent Battalion from Westmoreland County, Pennsylvania. The flag had an open red field with the British ensign in the upper corner. They painted a coiled rattlesnake and its "Don't Tread on Me" warning onto the center, as if ready to strike at the Union Jack.

The "First Navy Jack" features a rattlesnake winding its way across a field of thirteen red and white stripes.

 

Southern and Proud! - Katherine Jenerette �