Howdy Folks, I've been selling my spare JB Champion Nautilus bracelets and next on the chopping block is this 19mm gold plated Longines branded expansion version. I assume this would be great for your vintage Conquest, but would look good on any 19mm gold Longines. Details: - 19mm ends (true measurement of about 18.85mm) - 140mm Spring bar to spring bar - Links marked with "US Patent...etc" Are removable. So you can remove 3 expansion links - There is a crack on the backside of one end. See photo with red circle. Doesn't affect function since the spring bar runs thought the beads. Looking for $350obo. Venmo, Zelle or PP F&F is greatly preferred. I have references here, and 100% seller feedback on ebay with over 1000 transactions. Also have many references through Instagram with personal sales there. Free U.S. shipping, International will need to be discussed for cost/speed options. Thanks OF!