Nudge,
I have pictures of cracked Flues frames. And also several other SxS makes, including a STERLINGWORTH.
I have pictures of blown damascus barrels, and also blown modern steel barrels.
The Flues is a sound design. Hard to know if those broken ones got fed a proper diet or were force fed 3" goose loads until they said uncle.
If you are shooting clays or chasing upland birds, a Flues is a fine choice.

John