I have a Yamaha 642S (silver), and I have never really had a problem with it tarnishing. Due to the inability to take it anywhere lately to play, I have been leaving it outside its case for convenience sake. Now I've noticed a lot or tarnish on the horn. I have never had any of the anti-tarnish strips in my case, so that is not the difference.
Are the silver horns more susceptible to tarnishing when left out of the case?
Thanks.