the key; that is the Harmonized Customs Tariff (HTS) code for Miscellaneous Manufactured Items, including "reduced scale ("scale") models" which have been exempt from tariffs and customs. Either USPS or DHL or whoever didn't understand that Drumpf's tariffs were to apply to everything, OR, they're still following the "US Customs Harmonized Tariff Schedule of the Unites States Revision 16 (2025)". Either way, "good on ya'", as they say in Oz.