New old stock part.  Listing is for a single part.  If more than one is pictured it is just to show difference in packaging or condition.  See photos for detail and condition.

Description: Regulator, Electronic
Brand: Regitar
OEM(s): Delco
Voltage: 12
Set Point: 14.7
Terminal ID: Battery
Polarity: Negative or Positive
Includes Brush Holder?: No
Activation: Ignition
Adjustable?: No
Circuit Type: A-Circuit
Includes Rectifier?: No
Includes Tolerance Ring?: No
Application: Delco European Alternators
Weight: 0.09 lbs / 0.04 kg

References:
Delco 21226043, 7982685
Magneti Marelli 940038033
Regitar D671