There are just three bidders currently listed and two were prepared to fight it out to the high bid so far. And both feel the weight is worth at least the amount they bid. Nothing unusual in that. Good PY items, even unsigned ones, attract good money from people who are keen on them.
As for the antennae, yes, they are not so well set as many others but that will not do too much harm to the eventual high bid.
Let's wait until the item finishes and see what the winning bid wil be.