In article <5ov8lb$eoo@mtinsc03.worldnet.att.net>, tschoolr@spamless.worldnet.att.net says...

>I have a B+W filter that I think is either a UV or Skylight, but I'm not
>sure. It's a 77mm, and it's identified by these markings.....

You know by now that it is a UV, but you can also tell by placing
it on a sheet of white paper (doubles the color effect...) - a clear
or very slightly yellowish filter would be a UV, a slightly orangish
or salmon-colored one would be a skylight...
Hope This Helps
(David Ruether - http://www.fcinet.com/ruether )