A motorman or conductor in full uniform.  We don't know for which streetcar company he worked.  But despite the deterioration of the photo, we get a look at the type of uniform that was nearly universal through the first half of the twentieth century.  In service, a motorman would have had his control handles; a conductor would have had a coin changer on his belt.

The second picture is a head-and-shoulders closeup of the first photo.  The badge number is clearly 461, but there does not appear to be any lettering on the badge.