I think that bikes, like that Atala, in the condition it is in, and being so brightly colored, will fetch beyond market value. I have sold a few similar Step Through bikes and they have gone for far more than I would have expected. Put another way...
Not sure how much it is worth, but to me, I would not let it go for under $400.00. I should add that I would not pay $400.00 for the bike, but would seriously consider $200, if it were in my area and not in need of dis-assembly, packing and shipping.
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"98% of the bikes I buy are projects".