Found it on eBay, didn't hesitate and don't regret it one bit. The following is a description of this timer from "OnTheDash.com", the most complete Heuer reference found on the internet, truly a remarkable site. One other reference; http://classicheuers.blogspot.com/2010/01/super-autavia.html

FYI: Here is the newer version of the Heuer Super Autavia (67-75) now available and offered on eBay for $4,300 http://www.ebay.com/itm/221387315097?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649#ht_216wt_1362

Super Autavia -- Main Page http://www.onthedash.com/Guide/_DashMounted/Super_Autavia/

Introduced in 1958, the Super Autavia was hailed as the first dash-board chronograph for motorcars, power boats and airplanes. The headline in Heuer brochures of the period proudly announced that the Super Autavia shows simultaneously Time of Day and Time of Trip. For many collectors and enthusiasts, the Super Autavia is the ultimate Heuer dashboard timepiece, not merely a clock or timer, but a true chronograph. (to read more, please visit http://www.OnTheDash.com

TAGHeuer Customer Service / USA: http://us.tagheuer.com/en/customer-service-center/contact-us?SAVcountry=US&SAVlang=en

Heuer Switzerland / Customer Service: 011 42 32 919-8000 (Call to verify if they still have the parts one might need to correctly restore the timer. The Heuer vintage rally timers are serviced in Switzerland, a local US Heuer Outlet can ship your timer/watch directly to Switzerland saving you some additional shipping and insurance fees. There is a one-time $75 flat Fee for sending in the timer watch, but the fee can be credited back to the customer and deducted from the total invoice should the timer be repaired. Southern CA Heuer Outlet: TAG Heuer Outlet Store, Tel: (951) 849-9191, 48650 Seminol Drive, Cabazon, CA 92230

When you wind your watch... • A non-automatic mechanical watch has to be wound every day, winding is complete when you feel the crown resist. Your TAG Heuer is then wound to the maximum. It is important not to force the crown of a hand-wound watch to avoid damaging the mechanism. The official NIST US Time http://time.gov/HTML5/