So I have something only the detail freaks would notice or appreciate. A set of 8 Leonard 14 F "High Compression" spark plugs. They're all side gapped, which according to an image search is how they were made. They're 14mm and will fit my flatty once I clean the threads. Frankly I can't remember what I took them out of but they were too kool to toss away and actually fire despite the existing crud. I'm well aware of the 'useless w/out pics' rule so I'll take some later or tomorrow and add them here. I also did some searching for history and all I found was that they're in the Smithsonian in some way and listed/cataloged, but no story. When all else fails the best source is, you guessed it, right here. I'll take all the info that's fit to print. I promise, pics soon. No really, I will. Quick edit: the Smithsonian has their catalog on file in the the library. Didn't see anything about actual plugs.