From my personal collection, here is a 39 Jewel Girard Perregaux from the mid 1960's I believe. The 34mm diameter stainless steel case is highly polished like a mirror and still retains its original signed "GP" winding crown. The clear crystal reveals the great signed pearlescent dial and calendar. The "GP" on the dial appears to be solid gold? Recently serviced, running strong and keeping excellent time.