Switzerland Cowbell Keychain

Thank you for viewing.

*This is a Swiss cowbell keychain.
I purchased it over 20 years ago when I traveled to Switzerland.
It is engraved with Jungfraujoch (the highest railway station in Europe in Switzerland, also known as Top of Europe) (Image 5), so I believe I purchased it when I visited Jungfraujoch.
It has never been used, but has been stored on a display shelf at home for a long time.
There is a dark stain on the seam on the right side of the back (it appears reddish in Image 7, but it is actually a dark stain).
Other than that, I do not see any noticeable major scratches or stains. The front appears to be in relatively clean condition.
As this was inspected by an amateur, please forgive any oversight of minor damage.

*The size is approximately 8.5 cm in total length and 3 cm in width (at its widest point).
It makes a chirin chirin sound when shaken.
This item will be wrapped in cushioning material, placed in a zip-lock bag, and shipped via YuYu Mercari便 YuYu Packet Post Mini (delivery to your mailbox). Please be aware of this.

Please read my profile.
Thank you for your consideration.