I'd like to know too, I have a silver ring with no other mark, just 306
About 306 pounds in todays money
100-450 usd
306 kg = 674.614 lb
50-500 usd
It is: 0.05*306 = 15.3 discount
374.31
0.1307
18 times.
306 Horsepower :)
About 15 to 20 pounds from a scrap yard, definitely worth thinking about, save a lot of money.
Unless major improvement happens, about $1490