Help ID Cool Vintage Sign Font

Love this font found on an old Champion spark plug sign. Any help is greatly appreciated.

Comments

Vintage sign making--great stuff!
No digital font to add to Ryuk's list but here is another "Spark" sign using the same mini serif lettering style. The Vintage AC Spark Plug Tin Sign adds some lower case to the quest.
Don

Thanks for all the help.

You're welcome.
Don