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LM139AQML-SP: LM124/LM139 "die" version: difference between "Tested die” vs “known good die” vs "die sale"?

Part Number: LM139AQML-SP
Other Parts Discussed in Thread: LM124, LM139, LM139-SP

Team,

About the LM124 die / LM139 die devices listed in the below link:
http://www.ti.com/die-wafer-services/products.html#p1498=Catalog;HiRel%20Enhanced%20Product;High%20Temp;Military;Space&sort=p1498;desc

What does the difference in category mean:
         "Tested die” vs “known good die” vs "die sale"
Where can I find the precise definition?

Thanks in advance!

A.