bikeworkshop
Senior Retro Guru
It's a tig- welded 853 steel frame.
Try a magnet if you're not sure.
Flicking with a fingernail also tells you the difference between steel ally and plastic (or "carbon" as it's now known) but you need to recognise the sounds.
I would say this was a factory product from abroad, available from several brands. Italy and maybe hungary(?) were doing this sort of thing - far East production tended not to use 853 so much.
Try a magnet if you're not sure.
Flicking with a fingernail also tells you the difference between steel ally and plastic (or "carbon" as it's now known) but you need to recognise the sounds.
I would say this was a factory product from abroad, available from several brands. Italy and maybe hungary(?) were doing this sort of thing - far East production tended not to use 853 so much.