Johno59

The thing is the quality of the steel. Obviously the design technology is very restrictive but the lack of deep destructive rust means a hundred years later in 2019 it comes apart.
Any metal bicycle manufactured in the last 30 years will be a complete right off in 50 years or less. I have rebuilt 1980s steel bikes wherein the seatpost cost 1000 dollars to remove. If made of carbon fiber make that ten years and it's sponge.