There were just under 2500 A-Grades made in all gauges and configurations during their brief six-year lifespan. The vast majority are likely 12-gauges, so a 16-gauge with the single trigger option has to be fairly scarce. The grip cap and forearm tip look to be the pretty normally used black material to me. Certainly not real ebony.

The .410-bore Nitro is obviously restocked, which might actually make it more shootable then the original stock.