A656, it's like an A168 with dual time (single time zone worldtime). The year date only goes to 2000 so I'm using '83 even though it isn't a perpetual calendar. : r/casio
The Value Proposition: The Casio AE1200WH-1A World Timer, At Less Than One Dollar Per Time Zone - Hodinkee
Casio W-753-1AV Moon and Tide Graph Watch 2 Time Zones 10 Year Battery New | eBay
Amazon.com: Casio MTP-VC01D-8E Men's Stainless Steel Grey Dial Analog Digital Dual Time Zone Watch : Clothing, Shoes & Jewelry
Amazon.com: Casio #AW48HE-7AV Men's Analog Digital Dual Time Zone Watch : Casio: Clothing, Shoes & Jewelry
AE1200WH-1A | Illuminator All Black Digital Watch | CASIO
Hands-On: The 'Gold' Casio A500WGA-9DF World Timer - Hodinkee
Hands-On: The 'Gold' Casio A500WGA-9DF World Timer - Hodinkee
Baby G Watch Review | A Travel Gadget I'd Be Lost Without! - Between England & Everywhere