February. My advice if you are posting to the states. Se if you can send your parcel from the post office. If you decide your item is too fragile send it by a courier. Do not state your item is Antique , the courier and customs may refuse it. Make sure you describe it, including what it is made of. My sewing box took nearly 3 weeks to get released from US Customs.
We had a few charming Chinese ladies who came to buy something antique from Britain. They were all exceptionally well dressed and polite. It makes such a difference when a customer is genuinely interested in your speciality.