I have an original 1969 428CJ carb for sale.
List 4279 , C9OF-9510-M , dated 913 ( 1969 3rd week January)
correct 5673 and 5671 metering plates and 172 butterflies
4279 would have been original equipment on 1969 Mustang 428CJ 4 Speed , and 1969- 1970 Shelby GT500 4 Speed
This was restored and been in a plastic bag since,
$1350
please send me a private message if you have interest or questions