On nearly every other tandem the front seat post and the rear handle bar post are one in the same. On this one though they are separate. That’s weird.
The only bikes I’ve found with a similar setup are very old and it was done because the rear handlebars could be used for steering. That is not the case here. The second handlebar post seems to have no function other than supporting the handlebars.
The question is then, is this more or less valuable than the average tandem? Only the bidders know for sure.
See the full eBay listing