I know a little bit... Schwinn made balloon Jaguars for about 3 years, 53, 54, 55. You are missing light, truss rods. correct seat, and correct cables for sure. On the other components I can't be sure. They are desirable to Schwinn die-hards, but not as valuable as an equipped tank bike for example. They come up from time to time on ebay. I have seen then sell from $50 to $500 depending on originality, completeness and condition. Yours is in heavily weathered condition, so value would not top of range.