Looking for some help with dating this piece. It's a Leonidas Mono-Pusher with a Valjoux 22. Stainless steel case, 36mm diameter (without crown) & screw back. Dial is a beautiful blue, that changes color with different light to between blue and blue/grey. I picked-up this up recently from a dealer in Switzerland. He thought it was Ca. 1965. I believe that Heuer bought Leonidas in 1963 and that most watches were signed Heuer-Leonidas on the movements and case backs from that point on. Is that correct? This is signed Leonidas on the movement. I have sent to Richard Awiza - RA Time for an overhaul/service. I've asked him to send me pics of the inside case back. Is anyone familiar with this model or the period of time it was produced? Thanks!

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