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Old 09-04-2023, 11:50 PM
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OG68 OG68 is offline
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Join Date: Dec 2011
Location: Chula Vista, CA
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I'll take a stab at it.
PFLF could be the Goodyear DOT date code/Plant of Manufacture.

P - 1970
F - March
L
F - Freeport

C13L - could be March 13

My Goodyear chart doesn't say what the L stands for
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