High Fidelity Cables: the difference(s) between CT-1 and CT-1E (Enhanced version) visually

I got the answer from Rick Schutz at High Fidelity Cables.
I want to post here as a reference for someone who has the same concern.
Here is what he said:
"The center band on the RCA connector is flat and flush on CT-1E and raised and rounded on CT-1."

Ct1 enhanced also has gold plated center pin.. Other does not