I will be able to put up the numbers tonight, as the mowers arrived late last night.
A few quick updates:
1) i was able to find out the first 2 digits of the last block of numbers for eah one, one is 81 or 82, the other is a definite 80.
2) the White engine, is not white, turns out they thought i meant the sticker, the engine itself is black, this is the 1980 one.
3) Both are indeed vertical starter.
4) there are some more comming, this may include a large squrare top brigs (Newer, quantum i beleive) and a blue rover, with a silver brigs engine, this one is 77 or 79 for the first 2 of the last set, and has a crank top recoil starter (odly enough, that points forward so you need to stand infront of the mower to start it) and another rover with a Techumseh (Looks reasonabley new, its marked 3.5)
I should be able to get those full numbers up tonight or tomorrow.