Perforated holes in older GLP blends

I bought some (and no I didnlt "win" it) GLP tobacco on ebay. Two tins of Rennaissance and 2 tins of Mephisto. 75 bucks per 2 oz tin. All were stamp-dated 2003. Much to my displeasure two tins when shaken were dry as a bone. No rust was evident on the bottom or top of the tins. I peeled off the paper labeling and found there were hundred of tiny pinholes...rusted out. ACK !
One rusted out tin of Rennaisannce was completely dried out, had little if any smell and had an almost faded blueish color to it. The actual tobacco had rusty bits all over it as well. I opened a completely sealed tin to compare the two. The bad tin was not smokeable IMO.
The other rusted tin (Mephisto) was much the same..tiny pinholes of rust hiding under the wrapper. Rust had spread all through the inside and all over the tobacco. 150 bucks down the tubes. Buyer beware. Did the seller know they were compromised ? I do not know.
Anyway, on a good note, the other tins were perfect... IMO Rennaissance ( Original) is the best tobaco blend ever made. I tried the the newer limited "Reserve" and did not like it at all.
Has anyone ever exprienced this with old GLP blends. This was a first for me.

Buyer beware. Oh well. The other tins are perfect so I'm not too rattled. I was just wondering if it was common for those older GLP tins to rust out that badly. OTOH it could have been due to poor storage location.
I bought a big tub of ERR years back and that was rusted out badly and the tobacco was toast.
I have quite a collection of old aged tobaccos and all of them get put into mason jars and dated. I don't trust tins or those ET mylar bags either. I guess I'll have to be more careful buying off ebay. Pipestud sells good vintage tobacco and he's a straight shooter but everytime I visit his webpage all the good stuff is snatched up.

I've noticed some tins have a white colored liner/coating inside. Maybe this helps deters rust. I'm almost sure it was in some of my newer GLP tins.

The rust in both tins is very bad. The tobacco smells bad as well and is discolored with small and large pieces of rust everyhwere. I don't think I am going to try and save either tin. Lesson learned.
As far as questioning whether or not the ebay seller knew the tins were bad? I dunno. But a simple shaking of the can easily revealed the tobacco was crispy dry. I plan to contact the seller and let him know abut it...but that's as far as I'll go.