Ammo crate for 81mm M43A1 mortar rounds - age????

[Two-Oaks]

Hello everybody!  Recently bought this 81mm M43A1 mortar crate at a local auction.  Compared to others I've seen, it appears to be in excellent condition.  I understand this held rounds for the M1 Mortar which was used by U.S. forces in WWII and the Korean War.  I've seen other crates that have dates ... mine does not.  Is there any way to determine the approximate age of my crate?  Perhaps by using the Lot number?  Any comments or information would be appreciated.

[Armygas]

This box was made in Jan 1954 and loaded in Feb 1954.

Cheers

[Two-Oaks]

I appreciate the info!