G'day Norm K and Mod BB

Yes, as mower spotter BB grin said, the first one is a SB model 40.
I think the second is a Suffolk, and the third a Qualcast.

https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/84251/MODEL_40_-_14"_Reel_L.html
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=47536

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Jack

p.s. I love how many sellers use images on less-than-ideal lawns.