If anyone needs the PN of this plug in a future SEARCH, it is FORD STANDARD PN 87837-S.
Below is the PART DESCRIPTION in the 1952-54 LINC CHASSIS PARTS CATALOG -
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"Last Sunday, I caught him makin' eyes at Idell Bushey durin' preachin'. And I know what they do up there in the hills when they say they're possum huntin'. They're just sittin' around the campfire, drinkin' hard cider, hittin' each other on the shoulder and hollerin' 'flinch!'."
― Charlene Darling (Daughter of Briscoe Darling)