Yikes, got to think a bit . . .
Peugeot UO8. Rode first century (actually a double metric=125 miles) in 1973: TOLSC (Tour Of Lake St. Clair: Detroit, Michigan to Sarnia, Ontario, Canada). Then Sarnia back to Detroit the next day.
Peugeot PX 10
Fuji Finest
Follis Tandem
Assenmacher Tandem
Colin Laing Tandem
Bertin
Cannondale 600
Cannondale 1500
Co-Motion Tandem
Merlin Ultralight
Have ridden well over a hundred centuries, numerous double metrics and a half-dozen double centuries.
Toughest ride? 325 miles in 3 days with 22,000 feet of climbing, temps 103 degrees at the finish line on a tandem.