Where is my Serial Number?AndrewAndrew4:54 pmFebruary 19th, 2019 Where is my Serial Number? All our headphones are hand made so they will have a number engraved on the inside above the earcup. Please use this number when you contact us and we should know all about your product. 0 I WAS CHARGED IMPORT DUTIES/TAXES/VAT? WHY IS THIS? What are the taxes?