Bach Stradivarius 50BO Bell Cut Modification

This is a Bach Stradivarius 50BO that has undergone a full overhaul, including bell modification, unlacquered finish, and dent removal, performed by a professional workshop.
The cost for these modifications alone was approximately 250,000 yen.
For reference, the current price of a new model of the same instrument is around 800,000 to 900,000 yen.
The instrument's inherent quality has been enhanced with added tonal richness and improved handling, resulting in a superb instrument.
It will be shipped in a Bach transport case, but please consider it a bonus as it shows significant signs of use, including writing and a detached handle.
The case shown in the photos is not included.
Please provide your own case for the bell-cut section.
The slide and lever actions are smooth and in good condition.
While most dents have been removed, a few minor dents remain that do not affect playability.
I am selling this instrument due to a need for funds, though I am reluctant to part with it.
I may remove this listing if I decide against selling.
Please consider your purchase soon.
Thank you.