FS Eight Duplex Transformers made by the Jubilee Mfg, Co., Omaha, Nebr. These are basically a spacer for the spark plug wire to make a gap for the spark to have to jump to the plug. The gap has a clear window to see the spark. One end has an eyelet to fit on the plug, the other has a thumb nut for the wire to attach to. The idea is to help keep the plug from fouling. (Hey, don't laugh, that actually works!) I have the remains of three of the boxes and one instruction sheet which has a picture of them installed on a T engine. They are very fragile. $40.00 plus shipping. I can text pictures, but I can't email them, so please don't ask. Thanks, Dave
Correction. There are ten of the Transformers, I missed a couple. Dave
Private message sent.
Transformers are spoken for. Thanks guys, Dave