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Hello GreatG & welcome to the forum!
This is a bottom of the line Chiorda product from near to 1972 time.
You will be able to read a specific date from the backside of the cycle's Simplex Prestige rear derailleur.
Note features such as plate style bridges, bulge-formed head, five-piece solid axle hubs & stamped sheet fork crown cap.
Machines sold in chainstores rather than bicycle shops.
On some of their products serial is on head, some on dropouts and some on shell; while many others have none.
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Frame is constructed of Agrati bits -
its bulge-formed head is "AM" pattern
its seat lug is is part of "AMERICA" set
the bottom bracket shell, Nr. 000.8507 is part of the "AM" set
dropouts are item Nr. 000.8002
fork ends item Nr. 000.8010
fork crown and cap cannot be seen well enough in your images to identify
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Hope this helps you a bit.
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