PatchVault®
Change tracking was not implemented intially, so some early change records do not have details outside of the date of change.
| Field | Old Value | New Value |
|---|---|---|
| History | Exact Date of issue unclear; photos indicate it existed in 1956, could have been issued earlier. | Exact Date of issue unclear; photos indicate it existed in 1956, could have been issued earlier. Patch pre-dates First Flap |
| Image | 401-x1a.png | 401-x1a.png |