Note that when it comes to Brit and Continental 12 bore SXS shot guns of the 1890-1960 period, the value is pretty well determined by Brand Value = 8 fold, Original Quality = 20 fold, and Current Condition = 20 fold. The Manton brand name falls into the Brand Value level three group. The Original Quality could range from best work(OQ1) to colonial/farmer (OQ9) grade. The Current Condition depends on use and care of the gun from manufacture to date (pristine is CC1 abd wall hanger is CC9). BV3 guns are usually valued at 2/3 the value of the seventeen BV2 makers and 1/2 the value of the four BV1 makers. Whatever OQ grade gun will then be about 1/2 the price of a similar grade gun with a BV1 name on it; CC level being equal. Lower BV level is where the bargain shooting of high grade guns is to be had.
