The colour and shape look right, but my expectation of a corroso surface is very much like the one at Design and Arts. quite irregular and hitw soem of the surface clearly eaten away by the acid to create a crazed crater effect. Your bowl seems much smoother. Again, it could just be I'm not seeing the photograph very well. Also, it could be another interpretation of the technique; after all, it's merely acid applied to the surface. It's a lovely bowl, whatever it is. Venini also did a fair amount of corroso, if I remember. (I'm not suggesting it's Venini).
I've bought a few things from Design and Arts, who are very easy to deal with. I've been pleased with what I've received.