The last two are garbage and worth maybe 200 each. I'll give you 500 for both.
The first speedy is nice but nothing special. However, the Chronostop is really cool. Information about how to use the cal. 920 (the date version of the cal 865) is readily available online with a quick Google search. Value? Probably in the $500-1000 range.
The last Seamaster is an awesome cal. 1040 reference 176.XXX off the top of my head. Value ranges from $1200-2K depending on the condition/servicing.
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