Tesoro chronology from another forum...

[Snowy]

The Tesoro metal detector chronology is:

1980:  Deep Search VI, Deep Search IV, Deep Search VII
1981:  Aztec, Cortes (first), Amigo
1982:  Scout, Mayan
1983:  Inca, Silver Sabre
1984:  Sabre II, Sabre Supreme, Silver Turtle
1985:  Golden Sabre, Cutlass
1986:  Silver Sabre Plus, Eldorado, Royal Sabre
1987:  Toltec 100
1988:  Toltec 80, Diablo, 4 Reale, 8 Reale
1989:  Golden Sabre Plus, Lobo
1990:  Bandido, Pantera
1991:  Diablo II, Silver Sabre II, Stingray, Laser B1
1992:  Cutlass II, Golden Sabre II, Laser B2
1993:  Bandido II
1994:  Toltec II, Sidewinder
1995:  Piranha, Stingray II, Laser B3
1996:  uMax Bandido, uMax Cutlass, uMax Diablo, uMax Sidewinder, Amigo II
1997:  Shadow X2, Lobo SuperTRAQ, Laser PowerMax, Bandido II uMax, Silver Sabre uMax
1998:  Cutlass II uMax
1999:  Sand Shark, Laser Rapier
2000:  Conquistador, Compadre, Golden uMax, Tiger Shark
2001:  Cortes, Conquistador uMax, Eldorado, Euro Sabre, Silver uMax
2003:  DeLeon, Tejon
2004:  Cibola, Vaquero