Definitely a Senn, the body type is the HD540/560 type, the headband is second series, which accompanied the switch from 600 to 300 ohm drivers in '91 and lasted to '94 when it was superseded by the HD580. The Gold-colored earpiece cover was not on any version of this headphone that I know, and it looks like they aren't even a gilded version of any of the backs that were in production, at least so far as I can ascertain. The pleather earpads were only put on the lower models in the range, with velours on the top models-- but that doesn't necessarily mean anything, as I'm sure they've been replaced sometime in the last fifteen years.