In This page linked to in the Orcus thread, there are stats for a drac that owns a "ring of Defence".

Anybody knows what it does beside giving a deflection bonus to AC, and where the source stats are from?

Ring of Defense +5 (+5 Deflection bonus to AC, +5 Resistance bonus to Saving Throws) Cost: 100,000gp

That's from a websearch, I can't quote an offical D&D source.

But considering the Dragon wearing the ring has the following saves.

Saves: Fort +37, Ref +27, Will +35

And according to the SRD he should have.

Saves: Fort +32, Ref +22, Will +30

I'm guessing it is accurate.