Hi Jon,
Glad you re-posted over here. Like I said in my other response in the 'Trader' section, it appears to be a 512.413. The link I gave you was from the '70 catalogue, but you are right the crown on yours is different, more like those from the '63 catalogue. With these, there needs to be a varying amount of detective work, so I would deduct that it's a 512.413 from around the '63 to '69. The later '70s versions having a different crown and pushers. Best to grab a few beers and trawl through the catalog section of OTD.

Like I mentioned before, I'm no expert in stopwatches, be I'd guess-timate at around £100 value. Unfortunately they don't command the prices they should. They are beautiful things and you'd be hard pressed to find a modern equivalent for the same price. It's daft.
Mind you, 20 years ago Heuer Super Autavias and Monte-Carlo dash timers were considered throw away parts from a defunct technology from rallying - now they are sought after.

Stewart

: Hi all,

: can anybody shed some light on this Heuer please. The box ref no
: shows 512413 but having looked on "onthedash.com"
: vintage catalogues it apperas to be a 1960's model. The reason I
: think this is because the centre crown (within the hoop) is dome
: shaped which apperas to be a 60's model not a 70's model. I have
: very kindly been advised that it is indeed the 512413 1970's
: model but I cannot find the same face/button/black colour
: combination. Maybe somebody could shed some light please?? Does
: anybody heve a valuation on this piece, as you can see it is in
: top condition. Links are below :

: http://www.flickr.com/photos/65279525@N07/5943509565/
: http://www.flickr.com/photos/65279525@N07/5944072776/
: http://www.flickr.com/photos/65279525@N07/5943525823/
: http://www.flickr.com/photos/65279525@N07/5943534223/

: Thank you for looking,

: Jon