Sad, but I'm not sure if Sony has made a "true" Trinitron tube for awhile. I could be totally wrong on this, but I swear I've seen a few newer Sony's with a 3 gun in-line tube. I remember reading that they couldn't afford to produce everything in-house and have outsourced the last few years. I think the patent ran out on the Trintron, so some later non Sony sets do have a 1 gun triniton "type" tube.
Example would be my 2003 Toshiba. Exact clone of the 24" Sony Wega, with a tube made by Orion.