Trunk Date Codes?

[wowzers1941]

There are plenty of ways to tell how old a bag is, but I can't find a way to tell how old a trunk is. Ex: 1060177

 

[BULL]

Arent't these serial numbers rather than date codes?

 

[wowzers1941]

Arent't these serial numbers rather than date codes?

Do you know of a way to tell age from the serial number?

 

[FrenchNewbie]

I'd be interested in this too!