I don't think you get a certificate for 483 (Enterprise Connectivity with J2EE) - it's not really a certification on its own, but a contributing exam for other roles. That's just what I seem to recall - it's like the 486 exam.
Theodore Jonathan Casser
SCJP/SCSNI/SCBCD/SCWCD/SCDJWS/SCMAD/SCEA/MCTS/MCPD... and so many more letters than you can shake a stick at!
J2ee Enterprise Connectivity Test is part of jcert Enterprise Developer Certification. You have to add Java 2, OOAD UML (IBM again) and another exam from IBM WebSphere or BEA Weblogic or Sun iPlanet to complete the certification.