Spyder motor wheel question

[Mr. Chevy]

While I was detailing my wheels today, I located what looks like date codes stamped on the backside of the wheel on the edge, opposite side where the tire bead seals.

Anyhow, there is 6 3 60 on three of the wheels and 6 4 60 stamped on the the 4th. I'm guessing June of 1960???????

Anyone know for sure if these are in fact date codes?? I thought these wheels came out late 60s, early 70s?????

Thanks..

Rich

[Lee Stewart]

They were manufactured from 1968-'69 until 1973,

[Mr. Chevy]

Ok thanks... These numbers must be of some other significance..

Rich

[Lee Stewart]

You might want to give these people a call - they seem to specialize in selling vintage mag wheels and have Spyders for sale:

http://www.akhwheels.com/pages/inventory.php?cat=2

https://s17.postimg.org/ei7zw91hr/screenshot_4666.png (https://postimg.org/image/llfvbv6x7/)