This model is sized as an oversized 8ft, or often called Pro 8ft.  It is 2″ wider and 4″ longer than a traditional 8ft table, offering a slightly more challenging game.

The Heirloom models were offered during the good old days when Brunswick was still made in America!

From the 1978 Brunswick Billiards Heirloom sell sheet:

Antique styling complements the select hardwood construction and the natural wood finish. Solid mahogany rails and traditional leather net pockets. Attractive hardwood legs, distinctive pearlized inlaid sights.

Three piece, matched, registered, and doweled 1″ full sized slate provides a permanent level playing surface. Brunswick Super Speed cushions, the standard of the industry, provide maximum accuracy and true rebound. professional ProLine wool/nylon cloth assures long life, resists wear and tear.

Stately elegance plus traditional Brunswick quality assures years of family enjoyment. Traditional pocket style only. Optional playing accessories available.

Finish: Multi-step natural wood finish for fine quality appearance and durability.

Construction: Solid hardwood for maximum strength. All wood kiln-dried to resist warping.

Rails: Natural finish mahogany rails are supported by and bolted through the slate for maximum rail rigidity. Specially designed adjustable nut plate allows rails to be precisely positioned and pulled down permanently to the slate.

Base frame: Massive laminated wood base frame.

Cushions: Brunswick Super Speed canvas backed cushions are the standard of the industry providing maximum accuracy, true rebound and consistent play.

Sights: Pearlized inlaid sights have a maximum tolerance of 30/1000ths of an inch for accurate play.

Slate: Three piece, matched, registered and doweled 1″ full sized slate provides a permanent level playing surface. Slate extends underneath the rails for consistent play. Slate is precision machined level to within 10/1000ths of an inch.

Pockets: Leather covered pocket irons. Regulation size leather net pockets. Pocket openings made to exacting industry standards.