AERO Mil Spec 12-Pos Circular Connector Plug 

Part# M3723/82W12126

Additional number on connector: AE83382W12126

NSN# 5935-01-177-3870

Numbers on jar of pins:
13-M39029/5-115
Superseded M39029/5-20-20
2-MS27488-20-2

New in sealed bag other than the one pictured