Age of a Carrier Condenser

[Thomas Finnegan]

How can I tell the age of a Carrier unit model # 4DRUAA08A2A6A0A0A0; Serial # 341DU22892?

The unit is the leftmost unit in the picture.

[John Arnold]

How can I tell the age of a Carrier unit model # 4DRUAA08A2A6A0A0A0; Serial # 341DU22892?

The unit is the leftmost unit in the picture.

No picture. Does it look incredibly old? Like, 1963?
I have read that in the '60s the first number in the serial # indicates the year.

[Jack Feldmann]

Are you sure about the model number? I couldn't find anything like that in my Prestons Guide