This is a split set of letter sets, a collaboration with Furukawa Shiko, limited to the international stamp exhibition event. Each of the three types of letter sets includes 4 sheets of writing paper and 1 envelope, and the Soe-bumi letter set includes 3 sheets of writing paper and 1 envelope. Although it is a new, unused item, it will be shipped after being opened, so please consider purchasing if you understand this. It will be shipped in waterproof packaging.