Where is one supposed to find the reference of the controller ?

Well, I can add 6ES7 677-2WB42-0GL0 to the list of controller based on 6ES7677-2DB40-0AA0.

Recognized as CPU 1515SP PC TF 6ES7 677-2WBx2-0xx0 in TiA v18.

What seems to me totally weird is that the reference 6ES7 677-2WB42-0GL0 appears only on the delivery notice and nowhere on the controller ! What if you are not supposed to have the delivery notice ? Say for instance you buy a training pack 6ES7 677-2WB42-4AB1 and the receptionist fordwards the content and keeps the delivery notice. Where is one supposed to find the reference of the controller ? 

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Split from cpu 1515sp pc2 with TIA portal 15.0.