What's that "*" on the TOG II mean? The Chieftain explains:

The asterisk was the British Army's method of designating a "variant." Where the US uses "A1," "A2," or "Mod 1," "Mod 2", etc., the Brits put one or more asterisks if it's not sufficient a change to warrant another mark number. The Lee Enfield No 4. Mk 1 and No 4. Mk 1* rifles, for instance — the only difference between the two is a notch in the bolt track.