Tare weight on powder containers

Does anyone know what the tare weight on the old 5Lb can of IMR powder is?

I do have the tare weight of Hodgdon 1Lb plastic container with lid. it is 951.0 grains

Alliant's one pound container with lid is 1000.0 grains

Let me know,

Jason

From Left to Right. 445, 511, 586, 436 in Grams.
Some have thicker metal and different type tops.

Thank You for your help.  By any chance do you have the 1980's style can to weigh?  

Thanks Again,

Jason