Sony KV 5000/5100 Differences?

[etype2]

Originally Posted by jr_tech

I have seen 5000s both ways, I presently have a 5000 with the "econoquick" logo below the UHF ch selector knob. My earlier 5000 (which was stolen) did not have the logo. The manual that I still have from my first 5000 does not show the logo.
S0ny sometimes takes a while to "invent" these terms... The first "Walkman" was just called a "TPS-L2"
jr

If you you still have your KV 5000 manual, is there a print date shown any where? I'm trying to establish a valid introduction date for both the 5000 and 5100.