Guys, let me share my recent (last week) experience in collecting my knife from Singpost & A&SE. I ordered my ka-bar #1213 Kraton G handle with SGF sheath from an online seller and he shipped it out using USPS. The parcel arrived from NYC to spore and was detained by Singpost pending GST checks, Singpost wrote to me and asked me down to show invoice for the purchase.
I went down and show them the invoice and the singpost guy told me to open it up for inspection, he saw the ka-bar and said he was a "dagger" and wrote it down in a form and told me that it will be send to A&E for further inspection.
The following day, i went to A&E at cantonment and when I opened the parcel and show them, they asked me why did I declare it as a dagger. I told him it was his competent counterpart in ICA that wrote that down. He didnt even told a second look and told me ok and signed a book to take the knife back. Wasted one day leave.