This has probably been shared before, but Trent Boggess hosts a website with some very interesting Model T Ford research and background information, thank you Trent for all of your work!
Thank you for posting that link.
I have a Soot Proof spark plug similar to the one shown in the section about the 1909 T.
I can email a photo to someone willing to post it here if interested.
Dale, I can't post pictures, but I would like to see it. I may still have one somewhere. I had no idea it was factory or even anything special because of the nickle plating. Spark plug collectors can get nuts. I sold an Erie Railroad pipe thread plug on eBay a number of years ago that staggered me.
Is this what you wanted to see?
Thanks to Mark for the link and Trent for the research work! I bookmarked this one!