FIrst of all, the only rules presented in the initial post are date or denomination&type. There is no "any type, if...", much less, your claim to "any type, if early enough" would be entirely open to interpretation. There have been bust to seated to bust coins posted. These failures render this thread an affront to logic, attention and capability.
The latest deviation is the 1797 half penny, that follows an 1811 half penny, that follows an 1835 half penny.
I repeat my mantra, "Either everyone follows the rules, or the rules are meaningless".
From now on, I will simply assume that many posters do not have the ability, or are simply too lazy, to determine the proper series of coin that should be posted.