P.S. According to the U.S. government's Harmonized Tariff Schedule:
https://hts.usitc.gov/reststop/file?release=currentRelease&filename=Chapter%2097
the Trump administration's removal of the "de minimis" exemption(from 08/29/2025) for certain imports from Japan does NOT apply to buyers of philatelic or postal history items, nor collectible post cards. SHOULD American-based buyers be mistakenly asked to pay duties on purchases, they are welcome to send their purchase(s) back for a full refund. As always, thank you for your interest in my store! If you have purchased from me in the past, once again, thank you for your business!