Tariff Code for Online Vintage / Antique Sellers

I am a sole trader specialising in selling vintage and antique items inc glass collectables, ceramics, lamps etc. I only sell via the Etsy platform and ebay and ship mainly to the USA, Australia and the EU. Any one have any ideas around tariff codes for collectable vintage and antique items. Got caught out by a DHL postage quote demanding a tariff code before I could proceed. Any help would be appreciated. Thanks