Jerry, Green has brand value (BV) level three, which is 2/3 of BV2 and 1/2 of BV1 (Boss, H&H, Purdey, and Woodward). Guns were made to a price point which translates into an original quality grade (OQ); OQ1 is a best work grade gun and OQ9 is a colonial/farmer grade. With the possible exception of Boss, all brand names supplied guns of various OQ grade at various times in their histories. Trying to associate a single OQ grade with a maker's name is a dead end. If you have a Green gun of OQ1, it will value at about 1/2 of a OQ1 gun with a BV1 brand name, both guns in the same current condition level (CC).
Let me know if that isn't clear.
