Mullard CV 2493 / E88CC-01 made in Great Britain (gold pins)

These are E88CC-01 Mullard made in Great Britain low noise version in Nato boxes for the military from the Australian Navy.   This tube lacks a splatter shield with just a small metal wire holding a solid metal disc with dimples around its perimeter above the upper mica spacer. The sound of this tube is very different from the 6922, with a less pronounced bass and less vivid highs. It does have a very nice midband, however, combined with a deep & dimensional soundstage. If you find the 6922 Mullards (and Amperex 6922s to follow) too pronounced at the frequency extremes this tube could be a valid choice representing a viable tuning alternative...