Unknown tube

To: tesla-at-PUPMAN-dot-com
Subject: Unknown tube
From: Mazzilli Vladimiro <mazvla-at-iol.it> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Sat, 05 Jun 1999 19:28:29 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hello all,

Can anyone help me to have the principal specifications of the tube
FIVRE 4C100T

Thank a lot
Vladi.