 CONT: In the episode in which Kramer attempts to help Jerry by  pretending that Jerrys stereo was damaged during shipping, he  purposely tears it apart and mails the broken parts to Jerrys  apartment. Jerry refuses to accept the package and after Uncle Leo  signs for it, he calls Jerry on the phone. While Jerry and Uncle Leo  are on the phone talking about this package (which contains the  dismantled stereo), the same stereo is visible in Jerrys apartment.  It is in its usual place and is completely intact.