There are two versions of this teleconverter: one with "A" contacts and one without, but both lack the "A" in their name.
|Exact Name||CPC 2X TELE-CONVERTER MC-4|
|Year of Introduction||unknown ~ unknown|
|Sold with Hood||—|
|Sold with Case||—|
|Optical Formula||4 elements in 3 groups|
|Maximum Diameter||62 mm|