value of a FOX Sterlingworth, 20 ga. with 20 inch barrels?

These may be a bit low...
STERLINGWORTH
- 12, 16, or 20 ga., 26, 28, or 30 in. barrels, various chokes, boxlock, extractors, double trigger, checkered pistol grip stock. Mfg. 1905-30.
Grading 100% 98% 95% 90% 80% 70% 60% 50% 40% 30% 20% 10%
N/A $1,475 $1,250 $975 $875 $750 $575 $500 $450 $395 $350 $300

Add 33% for auto ejectors.
Add 50% for 20 ga.
Add 20% for 16 ga.
Add 25% for single trigger

Ulrich1, made or patented in '04? I'm asking because the Fox serialization chart only goes down to 1913 even though the bluebook and other sources give '05 for the Fox Gun co start..

If the barrels were cut down, I'm not saying they were , it would knock the stuffing out of the value possibly down to shooter levels ( $500 or less), however, if they were factory length at 20 inches it would be a rare model and worth a bit more.

We'll need to find a Fox historian that would know

Please let me know what you find out, especially the rarity or lack of.. oh yeah, the serial should start at 351,000 and go from there...

If you really want to impress your friend send the serial number and a $25 check to
Mr. John Callahan
53 Old Quarry RD.
Westfield MA. 01085

he'll send factory specs for when it left the factory