Date Code on Firestone Wide Oval

[oldchevelle541]

Greetings, I am replacing an old Firestone spare in my 1970 Coronet. It has a date code of VCL-Y4A486 then shows F7B. Can anyone tell me year this tire was made so I can determine if its worth saving just because it could be an original. It is G70-14

Thanks in advance.

 

[themechanic]

48th week of 1986?

More info here https://www.tirerack.com/tires/tire...39590&ef_id=XboK5wAABTtFE4NJ:20191106165406:s