According to the current blue book (prices are consistently a bit lower in Canada, where the Winchester name is not as much of a factor as in the States. There are numerous special models commanding prices as high as $12,500 for the trap model in perfect condition. Below is for standard field grade.):
MODEL 42 SLIDE ACTION - first pump specifically designed for the .410 bore, hammerless, 2 1/2 (introduced 1935) or 3 in. chamber, 26 or 28 in. barrel, plain walnut pistol grip stock with circular grooved forearm (modified 1947), invented by William Roemer, approx. 6 1/2 - 7 lbs. Approx. 164,800 mfg. in 4 grades between 1933-63.
Add 35% to any Model 42 chambered for 2 1/2 in. shells.
Special order features on field guns have captured much collector interest in recent years. Combinations of these features can add a considerable percentage to the base values listed. Special orders on rare variations are very desirable, and prices can double, or more than double, if the combination is right.
Model 42 Slide Action Standard Grade - 26 or 28 in. plain, solid rib or vent. rib barrel, plain walnut straight or pistol grip stock, walnut grooved forearm. Mfg. 1933-63.
Grading 100% 98% 95% 90% 80% 70% 60%
$1,750 $1,500 $1,400 $1,250 $1,050 $950 $850
Add 25% for pre-war.
Add 75% for solid rib.
Add 150% for factory vent. rib.