Here is the full ledger page with my rifle on it. The earlist rifle on this page is from 1928, the latest is 1934. Yes, for sure my gun is a High Velocity model (marked HV in the ledger) and the number "1' engraved on the floorplate refers to it be one of a pair of guns ordered by Lord Zetland. Here are some more pics of the ledger page that I have. Note that most of the .275 on this page are Number 2 HV models. Most of the other rifles are .350 Rigby Magnums and a couple .416's. I wish I owned a few more of these :-)