Serial Number	Month/Year made	Color	Construction	Decals	Fork
T1J0079	October, 1981	Blue	TIG	Specialized large down tube, Stumpjumper small top tube, '5' shaped S on head tube	Socket type
T1J0143	October, 1981	Blue	TIG	Specialized large down tube, Stumpjumper small top tube, '5' shaped S on head tube	replaced
T1J0169	October, 1981	Blue	TIG	Specialized large down tube, Stumpjumper small top tube, '5' shaped S on head tube	Socket type
T1J0184	October, 1981	Blue	TIG	Specialized large down tube, Stumpjumper small top tube, '5' shaped S on head tube	Socket type
T1J0198	October, 1981	Blue	TIG	Specialized large down tube, Stumpjumper small top tube, '5' shaped S on head tube	Chrome biplane type (replacement?)
T2C00122	March, 1982	Blue	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2C00234	March, 1982	Blue	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2D00361	April, 1982	Grey	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2D00006	April, 1982	Blue	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2D00375	April, 1982	Grey	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	Chrome biplane type
T2D00387	April, 1982	Grey	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	Chrome biplane type
T2F00127	June, 1982	Grey	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2F00361	June, 1982	Blue	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2F00382	June, 1982	Blue	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2F00279	June, 1982	Grey	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
T2F00638	June, 1982	Blue	TIG	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
M2G29792	July, 1982	Grey	lugged	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
M2H31055	August, 1982	Blue	lugged	Stumpjumper (big on down tube), lightning bolt 'S' on the head tube	biplane type
M2K50599	November, 1982	Grey	lugged	Stumpjumper (big on down tube), lightning bol

Specialized Bikes Serial Numbers