You can get the calculator watch from Back to the Future 2 for $38
Casio CA53W Twincept Databank worn by Marty McFly (Michael J. Fox) as seen in Back to The Future | Spotern
In-Depth: The Watches And Clocks Of Back To The Future - Hodinkee
Back To The Future Marty Mcfly's Calculator Watch replica movie prop
Casio CA-50 watch worn by Marty McFly (Michael J. Fox) in Back To The Future | Spotern
Marty McFly Costume - Back to the Future | Casio watch, Watches for men, Casio
Casio Calculator: The Original Smart Watch in Back to the Future
The watch Casio CA-53w-1 from Marty McFly (Michael J. Fox) in Back to the future 2 | Spotern
Vintage Unisex 80s Casio Ca-53w Calculator Alarm Digital Watch for sale online | eBay
Back To The Future And The Watches Behind It – Total Watch Repair
Marty McFly Costume - Back to the Future | Casio, Watches for men, Casio protrek
These old and obsolete tech products actually make great gifts
Marty Mcfly Casio CA-50, Common to popular belief the CA-50 was the original Casio worn by Marty Mcfly, before he wore the CA-53 in the later scenes! This is mine I sourced
11 Iconic Watches From Movies - Famous Watches for Men
Casio Men's Vintage CA53W-1 Calculator Watch | Casio watch, Casio classic, Watches for men