I have a copper gratin dish, 30 years old, made in Portugal by Tagus Chef. Copper showing through interior lining. Source please for relining.

Are you close to RI?
I highly recommend East Coast Tinning in East Greenwich, RI(401) 965-4569.

Here's a past hotline thread that suggests east coast copper places that can re-tin. Hope it helps. http://food52.com/hotline/4745-need-to-re-tin-an-old-copper-pan-am-in-union-county-nj-45-min-from-nyc