I realize this is a few days 'late' and a bit too long, but I just haven't had the time to reply until now.
The OP has asked if the value will hold as well as 'other' Dyn's made in Denmark.
--TLDR; - The answer is no, they will not. Just look at the values of the newest Contour line vs the 'older' Contour line. - The 60's are just not holding their value the same. Whereas my 'older' Contours are still increasing in value.--
I have had Dynaudio products for the last 25 years. Currently I have 3 systems in which all 3 have Dyn's at the end of them. They are all Contour series prior to 2014.
I am also in the process of trying to find C4's MKii or Evidence for my Main system (All prior to 2014).
Dynaudio was purchased in either 2014 or 2015 by a gentleman from the Bay Area who is Chinese. (His ethnicity matters not) - Whenever this happens the new owners always think they can cut costs somewhere, and that is exactly what they did. They introduced what they claim are 'better' drivers in newer cabinets. - ALL RUBBISH. I am not saying they don't sound good, I am saying they sound very different from the earlier Dyn's. And, crucially, all of the Dynaudio fans prior to the exchange know it because we have ears. My dealer that I have been using for ages has actually dropped Dynaudio as a result.
The drivers in the newer series are actually smaller and they claim better. They are also voiced different. I have only heard this on the Counters and not the new Confidence line, but from the other Dynaudio people I know who have tried them all agree. The newer ones sound good, But they have lost the Dynaudio magic.
I don't know of anyone who I have been associated with that have Dyn's over the years that have tried the newer series that have kept them. Every one of them have swapped back over to the older series when they could find them.
That should tell you everything you need to know.
Appologies for the late reply, and I hope this helps