This .375 came out of the Musgrave Custom Shop, sadly no longer with us. They made some very nice rifles during their time that were good quality and, for what you got, excellent value for money. To the best of my knowledge, Musgrave never made factory left-hand rifles, so this was a special order gun, no doubt.
The rifle's sights are typically Musgrave and similar to the ones they fitted to some of their factory rifles. The stock is hand-chequered and the quality of the wood a cut above that fitted to the factory rifles.
I think you did good here.