With prices rising all the time for good quality and original vintage watches, especially mechanical chronographs as seen in Citizen’s 8110 and 8100 automatics, I advise you to do your research before buying!! For example there’s an 8110 for sale at the moment on eBay described as ‘100% original’……well I suppose the parts themselves were originally made by Citizen, but the piece is a cobbled together watch with a 67-9178 case, a 67-9011 case back, and a 67-9071 dial – although offers can be made, the BIN price is over US$700.
If sellers have not done their research, make sure you do 🙂 I am happy to advise if you are not sure of something, just ask via the Form on the right side of the home page.
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Sweephand's Vintage Citizen Watch Blog 
Hi Stephen,
Thanks for that timely reminder about buying used watches on ebay and elsewhere.
You may recall that I bought a Leopard that I didn’t realize was a kludge. Remember the red sweep hand? I like it for what it is, but someday may ask your friend Brian the restoration wizard to sort it out for me.
Fortunately I didn’t pay a ton for it. But referring to your $700 example, I’d be upset buying that and later learning that it’s a Franken-watch.
Thanks for all you do for the vintage Citizen community.
~ Marvin
Dear Stephen, Thanks for all the effort you put into this and for beeing the Guiding Light for many vintage Citizen lovers out there! The 1963 Paraschock ACE I asked your advise about arrived here yesterday and I am delighted with it! Talk to you again soon, Bert