Although the crown can be wound the day, date and time cannot be set as the crown won’t fully pull out. And while the seconds hand will move it only does so for several seconds at a time. Given this and considering the movement’s unknown service history a complete overhaul is required. This seldom seen vintage 1970’s Helbros day-date diver has a “GERMANY” signed dial that has aged naturally and uniquely over time to a bluish tan hue. In my humble opinion it has oodles of character and presents markedly better in person. The original lume on the dial and hands, which remains fully intact and emits a quick-burst glow after being exposed to bright light, has aged gracefully. The bezel, which rotates a bit stiffly bidirectionally, shows considerable wear. The all stainless steel lugholes case, which appears to have retained its original finish, shows honest wear with insignificant signs of oxidation. The outside of the case back is stamped ALL STAINLESS STEEL WEST GERMANY. The crystal needs to be replaced. While I normally show movement pics of the watches that I put up for sale the case back on this one is torqued to what feels like factory specs and is on too tight for me to remove. Based on another identical reference that I’ve had I believe the movement is likely a 17 jewels PUW 1564 automatic with quickset date function. By winding the sharply threaded non-screwdown crown and then gently shaking and or spinning the watch face down on a soft, flat surface the seconds hand will move inconsistently and for only several seconds at a time. And since the crown won’t fully pull out the day, date and time cannot be set. Nor can the crown be pushed in to test the quickset date function. Given these issues and considering the movement’s unknown service history a complete overhaul is required. This watch measures approximately 38 mm excluding the crown, approximately 41 mm including the crown and approximately 19 mm between the lugs. Case thickness, measured from the bottom of the case back to the top of the bezel, is approximately 9 mm. Including the crystal thickness measures approximately 10.5 mm. Given that the day, date and time cannot be set, that the movement does not stay running for more than a few seconds at a time and considering that it has likely never been serviced a complete overhaul is required. As such there are no warranties, express or implied, attached with the sale of this watch. Vintage means old and while my personal belief is that old-school means better quality and workmanship, things can and do go wrong from time to time. For this watch that time is now. Any servicing costs going forward are your responsibility. And please study the 12 high magnification pictures carefully as they are part of the description and serve as an accurate representation of the condition of this watch.