The RB2140 model is identical to the original B&L5022 model, except the metal "studs" on the temple arms were replaced with the Ray-Ban logo and the right lens now bears the logo as well.
The RB2140 model is equivalent to the original B&L5022 model, except that the metal "studs" on the temple arms were replaced with the Ray-Ban logo and the right lens now bears the logo as well.