Would you worry about the authenticity of a bag if the dust bag is fake? I bought an Epi piece from eBay a few weeks ago and in my excitement, didn't even consider the dust bag. But, it's definitely fake and now I'm second-guessing myself on whether or not the bag is real. The seller did state that she did not have the original dust bag and the bag itself looks as it should for its age (tarnished brass, a few scuffs). Should I get it authenticated or let it go? TIA!