Check the listing for details. Eclipse Combustion Vintage 1964 Conversion Factors Pocket Guide Booklet Pamphlet. Condition: Used. Listed at 14.74 USD. Eclipse Combustion Vintage 1964 Conversion Factors Pocket Guide Booklet Pamphlet. In very good condition. The front cover has a couple small wrinkles near the top along the spine. In the middle of the booklet, the hinge has slipped off the top staple (see the last picture). This only affects the front and back of this page. No other signs of wear or aging. Thanks for looking at my item, and we hope you come back to Dry Creek often. We ask for two business days to get an item shipped, and will accept returns for thirty days after purchase. We happily bundle and offer a discount for multiple purchases. We like all our items, but we're not in love with any of them- we've got them here to sell. Make an offer, and we'll work something out. I'd love to from you if you have questions or comments- message me, and I'll usually respond in just a few moments.