I have 1.6 OZ in 14k .933 oz of gold, @scrap = $563.115
.4 OZ of 10k .16 oz of gold, @scrap = $96.88
2.3 OZ of 925 Sterling Silver 1.9388 toz of silver, @scrap = $16.014
and 1 Oz of .999 Silver(1990 Giants NFC Championship Coin, not sure if it has collectors value) figure you mean troy ounces here, @scrap =$8.26
Giving you a value of $684.27, as scrap metal. If someone offers you 75% of spot, and you need the money, sure. Take it. At spot sell, you're looking at somewhere in the range of what was quoted to you.
Personally, I would have all of it melted, except the coil as long as it is cased, and keep it. Labor to do the melt is only going to go up as fuel prices rise.