Have not seen one of these before with the badge in the sweep area
(http://www.saacforum.com/gallery/570-020219113518.jpeg)
eBay item number: 292938803299
here is a tach that was purchased from ford years ago and installed. the car was wrecked but the owner removed the tach and put it back in the box where it sat in his closet until now. it has the column mount on it but also has the unused dash bracket as well. this has been untested but I can't see why it would not work as it has been inside all these years. look at the pictures of the box because it does have faded writing on it as well as the 6 in the part number has been marked with a marker. C6AZ-17A 326-A
Starting bid:US $800.00
https://www.ebay.com/itm/292938803299 (https://www.ebay.com/itm/292938803299)
https://www.ebay.com/itm/292938803299
Over the counter . factory tachs were 9K this was a steering column mounted with that bracket
Great parts to fix a assemblyline tach but not at that price.