Yes, I got there by clicking on Auctions, then going down to Special Collections, clicking on "FILTER" and entering "Bamford" into the KEYWORD field and clicking on Search.
But on the Home page, if you click on Auctions and then click on "Archive", you get the option to click on "Featured Collections" (not Special Collections !) and if you click on Featured Collections, you get the error page. It's a real dog's dinner.