50-250 USD or so
Take it to a gunsmith and ask for help
50-140 USD
No such model number.
Derringer 2 Shot, 357 Mag, SN 929, what is the value
100-345 USD
Basically impossible to value with your description.
50-450 usd
50-525 usd
Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Auto 5's with poly-chokes, compensators and recoil pads (other than Mag 12's) will reduce value. Near mint guns and original box will command an extra premium. Recommend taking it to a gun shop for appraisal.
Yes, if 2 numbers recur the same amt of times.
Depends on condition. Range from 200-500 USD
100-1000 USD depending on condition, accessories, box, papers.