When Winchester moved production of Model 21 into the Custom Shop, a number of styles were greatly reduced.

There were now three distinct styles:
1. Custom Grade: chambered in 12-, 16-, 20-, 28-gauge and .410 bore; barrel lengths 26" to 32"; matted rib; fancy walnut checkered pistol-/straight-grip stock; checkered fore-end; pistol-grip guns furnished with steel grip cap; a small amount of scroll engraving was provided on frame of this grade.
2. Pigeon Grade: same chambers and barrel lengths as above; choice of matted or ventilated rib; leather-covered recoil pad; style "A" carving on stock and fore-end; gold engraved pistol-grip cap; frame engraved with 21-6 engraving pattern.
3. Grand American Grade: same chambers and barrel lengths as Pigeon Grade; addition of "B" carving on stock and fore-end; 21-6 engraving with gold inlays; extra set of interchangeable barrels with extra fore-end; all enclosed in a leather trunk case.

EDITOR'S COMMENT: According to Ned Schwing's excellent book, "Winchester's Finest, The Model 21", there were only eight 28-gauge and five .410 bore models made during the Custom Shop production era from 1960 to 1981. Any price estimates would be highly speculative.