Been looking for years for a very specific version of the 5719 one button handwind chronograph: the 1964, metal/black bezel, no lume version. Sorta like this one:
Actually, EXACTLY like this one! I'd actually seen this one on the bay and tried a few tentative offers to no avail. Did the same again with a higher offer and - suddenly it was mine!
The price I offered just made my own hair stand up!! But, thinking about it, this is exactly the one I have been looking for, for the last few years - and now I have it! Have seen them go for less, but I have never been around to pull the trigger! So, is it worth what I paid? Actually, yes - as an integral part of a 1964 Seiko collection, I would say its value is greater than as an individual piece. I know I am going to get a lot of bang for the buck doing the researching ;-) I think the caseback may be slightly above average too, and the October 1964 serial number coincides nicely with the October 1964 Tokyo Olympics:
I always factor into the price of my obsession that I - by researching and documenting significant (aren't they all!) vintage Seiko watches - are paying back some of the knowledge, education and sheer entertainment provided on Seiko and watch forums by members who have paid their "dues" by investing their cash or time. I personally would have a hard time justifying costs if I couldn't share - or receive - the fruits of this obsession!
Here's an interesting piece of information from the Official Report of the Organizing Committee for the Games of the XVIII Olympiad 1964 - 50 Crown Chronographs were presented as Torch Relay gifts. One wonders if they were specially inscribed, or with a special bezel/dial combination - or... perhaps... 5718s?

To those not familiar with the 5717 Crown chronographs, they came in a bewildering variety: black dials / white dials; with/without lume; steel, plastic and steel/insert bezels; date/no-date. I tried once to summarize the different permutations below (please note the 4598 is probably an erroneously typed 45899):
(Figure reference: Vintage Seiko GS Chronometer Crown Liner 5722 5719 book /eBay)