Hi all. I am hoping you find this watch as interesting and intriguing as I have. Perhaps you might be able to add to the story approaching it from the Lemania cal. 1341 side of things. Maybe even narrowing the time frame within the broader 70s or early 80s. As you see it is stamped 9801-72 on the inside case back which I believe is a Lemania model reference and It is definitely powered by the Lemania 1341. The case is similar to the Heuer Montreal and the Lemania 1970s Auto-chrono cushion case. I have heard that that the Lemania serials 3.5xx.xxx date to around 1981/82, and if so, that would make some sense as that's when Lemania was in control of HEUER. I have been unable to find a similar Heuer production example, so I am beginning to think it may possibly be a some kind of Prototype by Lemania/Heuer c. 1982-83 that never saw production given the small window of ownership by Lemania. I don't believe it's an assembly of parts as the dial is unique, the case not so much and the Lemania is all present and accounted for. The Heuer dial and hands all appear authentic. The inside case back with the Lemania reference 9801-72 I would like to know more about and the serial might hold the key to pinning down the date somewhat. Any thoughts as to whether or not this serial number and the Lemania reference is an indication of the early 1980s? It has a had a little cleanup. The white inner tacky ring has replaced the original black one (which is in my possession). Thanks for reading and I look forward to your comments, fellow HEUER WIS.