It doesn't look very rigid from here. But, hard to say from a normal perspective.
Windowed bumper QFP, cool. Old schtuff alright!
Ed: yup, CMOS EPROM style. MAX5k series... which seems odd to me as MAX7k is, I think, finally going obsolete, and MAX3k is still going (being the 3.3V version). Or something like that. Both latter types are EEPROM, not EPROM or Flash (well, unless the latter is, but, meh, I don't remember exactly).
On a related note, looks like they call it a tray.
http://www.altera.com/literature/an/an071.pdfTim