My wife and I are remodeling our 50s era kitchen and we decided to keep the vintage Youngstown metal cabinets. Right now I'm in the process of removing the old porcelain sink. I can't for the life of me figure out how it is attached! There are no clips, no screws, nothing. I'm ready to get out the sawzall but I'd hate to cut out pieces that might hold structural integrity. Has anyone delt with this before?

I realize pics might help but I'm at work... I can try and post some later tonight.