Your 375H&H is interesting. I wish the pictures were a little better. I'd value it as such:
1. Receiver with bolt and bottom metal: $1,000.00
2. Original 375 H&H barrel: $1,000.00-$275.00 (lack of rear sight) and subtract $40.00 for lack of front hood: $685.00
3. Stock: Stock itself is damn near worthless, sling swivels and sling: $50.00
4. Scope and mounts: put it on ebay and see what they are worth????
Total: $1,735.00 + scope and mounts...