The Shimano Altus derailleurs and shifters were made in the late 70s and early 80s. They were lower high-level components that would compare to today 105 or Tiagra. I had this group on my 1981 Schwinn Super Le Tour.
Rear Dearailleur


Capacity: Front Difference – 13 teeth, Rear Largest Sprocket – 28 teeth
Weight: 262 grams
Material: light alloy/steel
Front Derailleur


Capacity: 14 Teeth
Weight: 122 Grams
Material: light alloy/steel
Down Tube Shifters


Type: Friction
Weight: 85 grams
Material: light alloy/steel

Glad to see you back!
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Thank you.
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You’re welcome!
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Welcome back !!!
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Thank you.
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Its been awhile, I guess. Good to see you again.
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