I picked up a set of matched carbs today at a garage sale for $25. I was wondering if anyone cpould help me ID them. I've surfed for info on the net and can't find any good sources. Here ios what I know about them.

They all have 1-1809 cast into the bases. There is a tri-power linkage on them. Two of them have a metal tag with the number 33588 or 3358S with the date of E31 if I am reading it correctly. All three have 1454 on the bottom of the bowls.

Any idea what the application was????