I keep going back to the Casio 593 (F-91W and A158) - menga.net
Rare? Casio f-77w with module 593? : r/casio
Casio A159W. Module 593 | Vintage Watch Studio
Casio A155W Module 593 Digital Watch yr 1989 In Rare Collectors Condition | WatchCharts
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VINTAGE CASIO MODULE 593 SWAP FROM A159W TO A164W RESTORATION | WATCH RESTORATION MODULE SWAP - YouTube
Found out what some of the solder points on the module 593 are for. Those three that are marked are for timing adjust based on that table. This picture is from a