Differences in 32-33 Detroit Lubricator Carbs

[Andy]

I have a small collection of them. There more differences than if there is a cruse throttle arm or not. I probably won't get the pics in order so I will just state differences.
Think what the earliest version that I have does not have the lip to keep the filter sliding down One pic shows a slit in a part from a filter. The shaft for the throttle shaft had a cast on cap so the shaft was not visable. I have another carb much the same but the shaft end is visible. Still no ledge. No number on the bowl cover. Another later version has the throttle arm and the ledge. 32905 stamped on the cover. I suppose this is a 33 carb or has mixed up parts. The last carb is the same as the previous but has no number.
I have a loose cover with 32906 stamped on it. It does not have the riveted on shield that goes in the bowl. I suppose it is later but could go with the earliest carb. Mostly 33 carbs show up vs 32 carbs is because 33 carbs were the service carb and exact 32 carbs were not sold.
32 parts are endlessly different.