Postage to the USA
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.