possible, but nearly impossible.
Using a dedicated macro lens (like the Canon 45mm macro that can shoot 5:1) might be able to show some, but not all, of the issues.
There is also the issue of limitations of the digital capture and display medium - chromatic aberation and color bleed might be artifacts of the digital capture process, not necessarily the enamel quality or process.
So yes, best to try to inspect in person.
But hopefully someone can post some pics illustrating the things to look for.
Cheers,
TM