What is a 12 ga single shot Iver Johnson cycle works shot gun worth has hbff stamped on all parts looks like new given to me in 1960 used?

Smaller 12 and 15-inch models exist; however, they are rare and are primarily used as a supplemental cooking appliance to a larger cooking surface. Slightly larger widths of 21 and 24-inch units are more common and are typically found in small apartments or galley kitchens. The main cooktop category widths are 30 and 36-inch sizes.

Most 30-inch gas cooktops feature four burners, but some higher priced units boast five. Cooktops in the 36-inch variety feature five burners with some accommodating six. Gas cooktops are placed into a countertop by creating a cutout in the counter as specified by the cooktops' installation instructions.

The final look is that the countertop surrounds the cooktop on all sides with the cooktop slightly rising above the counter. Unlike range tops(http://houseware.answers.com/appliances/what-are-gas-range-tops) that install into cabinetry with knob control on their front face, cooktops have knob control on the surface of the appliance. Once the cooktop is secured into the counter and connected to a gas line and a 120-volt electrical for the electronic ignition, it's ready for use.

Install locations include in a counter along a wall of a kitchen or in an island. Cooktops must be paired with a single or double wall oven.