Grade 1 Brand New or unused, new old stock or as new. In working order and operationally checked.

Grade 2 Tested and in working order, operationally checked.

Grade 3 Untested / Repairable Untested but could be working, or can be repaired and is Electro-Mechanically complete, but may require some troubleshooting by the customer, or The Paint work may require attention.

Grade 4 As Is Un-Checked, could be complete and/or paint work might look rough, and/or might have some parts missing.