Early Hervue Pair (RMP6) -- said to have been used for many years in the control tower of the Geneva airport. Photos of movements here

Matched Pair of Autavias (AUT3 and AUT4): While the Master Time and Monte Carlo were introduced in 1958, many 1960s rally teams continued to use the Autavias. This pair is similar (or perhaps identical) to the pair of Autavias used by the Mini Cooper that won the 1964 Monte Carlo Rally; note original backplate.

Matched Pair of Auto-Rallyes (AR11 and AR12): This was the first of Heuer's 60-minute dashboard timepieces to have the name "Auto-Rallye" on the dial. The previous version had only the Heuer logo.

Early Super Autavia (SAT2): First execution of the Super Autavia, with Valjoux 76 movement; dial has baton markers for hours; case is chromium coated, low-profile; bezel is snap-on, coin-edge, with red markings. More photos here.

Early Rally Master Set (RMS21): Early version of the first execution Master Time and Monte Carlo. Master Time dial has numerals 3-6-9-12; Revue Thommen 63, double-barrel movement; center seconds (thick second hand). Monte Carlo has "Auto-Rallye" and scripted "Monte Carlo", with "Pat. Appl. For". More photos here

Early Rally Master Pair (RMP20): Relatively early version of the Master Time, dial has numerals 3-6-9-12; Revue Thommen 63, double-barrel movement; center seconds (thick second hand). Three-button Monte Carlo, with "Pat. Appl. For". More photos here

Later Rally Master Pair (RMP 14): Sold as a pair, in original double box on double back-plate. Monte Carlo has rare decimal minutes bezel. More photos here

Later Sebrings (SEB3 and SEB2): SEB3 (on left) is rare version co-branded Heuer and Abercrombie & Fitch. Notice difference in colors, as one has gone towards green and the other towards tan / brown. More photos here

Triple Desk Set: A custom-made desk set, comprised of 24-hour version of Master Time; early version of Sebring (decimal minutes on dial) and early version of Monte Carlo (decimal minutes on dial). More photos here