The chassis number seems to date from the first couple of weeks in 1943, but can't tell any more about it than that.
If you own the vehicle, you can send proof of ownership and some money to Chrysler and they will send you a copy of the Build Card, which will tell you what you need to know.
As I've said elsewhere, if it is a 98" wheelbase, there is no difference at the part number level between the Weapon Carrier and Command chassis, the chassis could have been put down the line and built as either.