I could be wrong, but I thought a garnature was a four gun set; four guns sets, whatever they are named, are quite rare.
RC - that Purdey is definitely a best gun. Trying to define a best gun by features will get you into all kinds of exceptions. The concept is no corners cut on design, materials, or workmanship. Also, any Brit master gunmaker could get out a best gun. The trick was getting the commission to make it. Don't get hungup on certain names assuring best guns - Purdey's sold a number of graded SLE's and BLE's that were certainly not best guns. Any maker or retailer could order from Birmingham any original quality grade gun he was willing to pay for. Outworkers capable of best work were well known in the trade and utilized as needed. Very few shops had all the skills in-house.
The Brit gun trade is a long and rich study.
