Up for auction is a vintage J&R Supreme No. 8 spark plug. This is an original early automotive spark plug featuring the white porcelain body marked “J&R Supreme” with the No. 8 designation.

The plug remains in original, as-found condition with heavy age-related patina and surface rust on the metal components. The porcelain is marked as shown in the photos. I have not cleaned or tested this spark plug and it is being sold strictly as a collectible display piece.

Features:

* Original J&R Supreme spark plug

* No. 8 model

* White porcelain insulator

* Original terminal and electrode

* Untouched barn/storage find condition

* Great for early automobile, gas & oil, or spark plug collections

Found in the recent barns, storage units, estates, and anywhere rusty gold hides. Please see all of the photos for condition and measurements. I will combine shipping on multiple orders, so be sure to check out my other items. If you have any questions, please let me know. Thank you.