Bontang (Johnny Key)

These are bontan pants that I collected for the cheering squad when I was in high school.
They've been stored in a dresser at my parents' house for about 25 years, so I've decided to put them up for sale.

I checked the entire item this time, and here's the condition:
(I took photos of all the areas I noticed)
- There's a shine all over.
- There are whitish scratches in some places.
- The button on the back pocket has melted? and left two circular marks on the pants.
It looks like melted plastic is stuck on, and I couldn't remove it myself.
(Photo #5)

Here are the approximate measurements:
(I couldn't see the tag, but I believe they are an LL size)
Waist: 76cm
Total length: 104cm
Thigh width: 38cm
Inseam: 79cm
Hem width: 15cm
(Please understand that these are amateur measurements)

In terms of silhouette, they are a bit more subdued than typical bontan pants, but the thigh width is about the same as the waist.
How about using them for cosplay or events?

These are used items, so please understand.
Thank you.