As a watch collector, it?s only natural to create lists, whether physical or mental, of the timepieces we wish to acquire. On one end of the list might be new and noteworthy watches you just have to try, while on the other are watches you wish you could have but know are unlikely to obtain. For me, somewhere in there is an offshoot of watches I?ve stumbled upon that intrigue me, but don?t have a pressing need to be bought. Perhaps they are odd or obscure but not highly valuable, relieving purchase pressure. Or they have some feature I want to experience, but not so urgently as to force me to spend the cash. The Speedmaster 3520.50.00 was one such watch. For years it lived on this limbo-list, occasionally prompting an inquiry on the forums, a trade offer here and there. However, thanks to a mix of flipping, being slightly disappointed in some purchases, and having too much time on my hands during the lockdown, this Speedie moved off the list and into my collection in mid-2020. Ever since picking up the criminally underrated Speedmaster Mk 4.5 some years ago (which since left my collection, but I feel will make a return) I gained an appreciation for off-the-beaten-path Speedmasters. Speedmasters that might only resemble their kin thanks to the word ?Speedmaster? being printed on their dials. Models that feature different case shapes and styles, not to mention wholly different movements and dial designs. While these models might not be what normally comes to mind when one s...