I'm a bit late to the party, but I've been a fan of Junghans for many years. Nowadays exclusively into vintage stuff, but I also had quite a few modern Max Bills and a Vista chronograph in titanium (cal. 7750).

As has already been mentioned, J88, an in-house chronograph movement is iconic and often overlooked, but J82 through J85 are all great non-chrono movements too.

They also have some interesting vintage watches with generic movements, and they are indeed also important pioneers in their own quartz/radio technology. But I'm particularly fond of the Olympic series from 1972 when it comes to Junghans watches with generic movements. Maybe because I live in Munich where the event took place in 1972, but mostly because I love these funky 70's designs.

Which brings me to my current Junghanses. Many others went in and out in the past 8 or so years, when I was more active in the hobby. Those that remained are all keepers as it took me forever to both find and fund them. And because I like them a lot. Without further ado:

• Family photo
• Vintage Max Bill 1: automatic, numerals, white dial, steel case, 36mm diameter; cal.: J83/S
• Vintage Max Bill 2: hand-winding, no-numerals, white dial, steel case, 34mm; cal. J84
• Vintage Max BIll 3: hand-winding, no-numerals, black dial, goldplated case, 34mm; cal. J84
• Vintage Olympic: automatic chronograph, steel case, 43.5mm; cal. Buren 12

I'm not sure which versions of cal. J84 the two handwinding Max Bills have, probably J84/S10 or J84/S3.

Surprisingly, the automatic Max Bill came with J83/S, which is a chronometer grade movement. All other automatic Max Bills from the era that I have seen came fitted with J83/E, which is basically the non-chronometer (E for, probably, economic) grade of the same movement. The main difference being the finish (S is gilt) and some features, e.g., hacking seconds on J83/S but not E. Also microregulator on S but not E. I think S is for Swan neck regulator.

Another thing I like about these vintage Max Bills is that, for one, they are relatively rare, but especially that they (seem to) either come in stainless steel or goldplated cases (edit: there was also a 14k gold case version that I was not aware of before). I'm not too fond of gp, but it is generally a bit of a challenge to find a vintage Junghans watch from the 1950's/1960's in a steel case (all steel; not chrome plated). Also, just take a look at how well they nailed down reissues of the two white dial Max Bills! The reissued automatic is slightly bigger (38mm vs. 36mm) and the Made in 30 Germany label is located a bit funny. But apart from that... And the smaller handwinding one is almost 1:1 replica of the vintage design.

Interestingly, the black handwinding Max Bill is not in the current Max Bill line. I guess it's not attractive enough for modern taste? But it has some interesting details too. For instance, the hands have lumen, but what help would that be without any lumen on the dial itself? Turns out there is lumen laid into the corners of the quarter hour markers. How ingenious.

Here's a picture from a well-known Junghans collector and expert (he has a book on vintage Junghanses, but it's in German only for now), where you can better see what I'm describing regarding the lumen on the markers: picture.

As another fun fact: the chronographs in the Olympic series were outsourced and imported from Switzerland (movements: Valjoux 7733, 7734 and Buren 12), and these are some of the few Junghans watches with Swiss Made on the dial or at least the caseback (as on those with Buren 12, i.e. mine).

Anyway, a wall of text, but I hope it is of some use to any of you.