mid year change

[northernclassictrucks]

Does anyone know what month in 1950 when the truckbed style changed on the Ford F-1 pickups?

 

[rotorwrench]

If more than one assembly plant was involved it would make it even harder to nail down a date if you could. Check this thread: http://www.fordbarn.com/forum/showthread.php?t=74310&highlight=1950+pickup