Cheers for taking a look @PhilDAS would you say there's a chance those holes were not caused by rust coming through? If not is the only other option been over blasted?
Look I'm not an expert, I work with a framebuilder but I'm not one myself so I don't have any credibility behind my opinion but there's very little rust colouring in there. If it was rusty enough to eat through the tubes, I think it would be a lot more obvious inside.
Cheers for taking a look @PhilDAS would you say there's a chance those holes were not caused by rust coming through? If not is the only other option been over blasted?