Just recently Pulled my vintage Gibson Ripper Bass out of the closet after many many years. Have begun playing again and suddenly realized the bass I pulled out of the closet is now worth much more than when it went in. How much is it worth? That is my question. I bought it new around 1974 to 1975. The guitar I believe is the Dark Tobacco Burst style (see attached picture). The SN is 190854, though from the Gibson Serial Number listing appears the best I can date the bass is 1973-1975. Shipping totals from Larry Meiners book seem to indicate this style was shipped starting in 1975, with only 5 shipped that year. Does that mean I have a 1975 model, or could it have been made in 1974? The Guitar is in great shape (few minor dings) and in original case. Any guesses on what it might be worth?