Re: 1953 Mercury Mark 5 Auction find

[Buccaneer]

Cleaned up the Super 5 carb, and am now trying to reassemble it.
Only been apart two days, so one would think I’d remember
how everything went 🙁
Not 100% sure of the orientation of the throttle valve (butterfly).
It’s not exactly round or oval, but kind of heart shaped I think.
There’s a little line stamped in the butterfly. Is that an orientation mark?
Also, the choke shutter spring has me stumped regarding
what it "hooks" on?
Anyone have an actual photo of one of these carbs?
My parts diagram doesn’t help much!
Thanks!

Prepare to be boarded!