This is listed at $14.00. It’s a two-sided comparison chart.
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“1960s? Jeep station wagon salesmans features slid card, size 4 by 9 inches, condition is good with light handling, any questions please send an e-mail, USA shipping will be $5.00”
Probably closer to 1951 before Chevrolet began using full pressure oiling systems in their 6 cylinder engines and after the Lightning 6 was changed from the L-161 to the 673 designation and before the F-head Hurricane 6 was introduced in 1952.
Yep, given the grille, I’d say you are correct Colin.