It's definitely not Webster. Or Harold Ashby (who could sound a lot like Ben) either.
Frank Culley sounds like a likely candidate. One website says that it's Willis Jackson, but I'm a bit dubious about that.
Here's what I found (see here: http://members.home.nl/henk.gorter/Itc5412.html)
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December 16, 1954 : THE CLOVERS do a three-song session in New York City. "Blue Velvet" is coupled with "If You Love Me (Why Don't You Tell Me So)" for release on Atlantic 1052 in February 1955. A # 14 R&B hit. Also laid down is "Love Bug", which will appear on Atlantic 1060 in April 1955 (c/w "In the Morning Time" from a session on April 16, 1954). Lead vocals by Billy Mitchell. Willis Jackson plays tenor sax, more details unknown. Produced by Ahmet Ertegun and Jerry Wexler.
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