This is a very common problem with many screw-cap pens. Pretty much all Pelikans I have handled in my shop that have the screw cap that have been used have these marks. There are some designs that avoid it, like the Aurora Optima mini, many Pilot Custom pens, and some Sailor Professional Gear models. The Nakaya design also seems not to have this problem. The modern Aurora Optima and 88 get this, but it's usually inside the cap, not on the outside of the pen, so it's hidden. It doesn't seem to affect the auroloide Aurora Optimas though. I've seen some Montblanc 146 and 149 with scratches on the body from the cap, but I've also seen some without, but I never made note of that in my records. They don't seem to get the marks as badly as many Pelikans I have seen do. Also, some Pelikan sizes seem to get them less than others. The Montblanc Diva collection avoids this problem entirely by making the section never touch the inside of the outer cap and only the inner cap and putting the threads on the cap lip.
This topic was also discussed before about the 1912 here
So, why exactly do we hear about this problem just now, rather than before? My guess is that with the safety pen type design, it's more noticeable since you have a whole expanse of shiny material that is only broken by a band of scratches made by the cap.
Stolen: Aurora Optima Demonstrator Red ends Medium nib. Serial number 1216 and Aurora 98 Cartridge/Converter Black bark finish (Archivi Storici) with gold cap. Reward if found. Please contact me if you have seen these pens.
Please send vial orders and other messages to fpninkvials funny-round-mark-thing gmail strange-mark-thing com. My shop is open once again if you need help with your pen.
Will someone with the name of "Jay" who emailed me through the email system provide me an email address? There was no email address provided, so I can't write back.