Hello Kitty Letter Set with "How to Write a Letter" Guide (Showa Era)

Thank you for looking.
This is a Hello Kitty letter set with a strong scent of the Showa era.
The How to Write a Letter on the back might be interesting.

*How to Write a Letter*
① Address the envelope correctly.
If the stationery is white, please use a white envelope.
Write the address correctly. Even a difference between 1-chome and 2-chome can cause great trouble for the delivery postman. Don't forget to write the postal code.
If you get the recipient's name wrong, it's rude, no matter how young you are.
Even if a superior gets your name wrong, it's rude, so when you write a letter to your teacher, writing Mr. Taro Matsui is more appropriate for a student than Taro Matsui.

② Clearly state your address and name.
Write your address and name on the back of the envelope. Some people only write their name and not their address, but even if the recipient knows your address well, please write it properly. The recipient can write a reply to you just by looking at the back of the envelope, without having to look at their address book.
If you normally want to receive a reply to your letter, you don't need to include return postage. However, if you want to ask an old teacher to write something for a newspaper or collection, be sure to include return postage.

*Please note that this letter set cannot be used for actual mailing due to its small size.*

*Condition*
This is an unused vintage item from that era.
The design itself, with its red check pattern, bears, and Kitty-chan, is a classic retro and very cute.
It's more for enjoying as a collectible that evokes a sense of the era rather than for practical use.

Even with very specific advice, this letter set cannot be used for actual mailing in the end. However, isn't it a rare Kitty-chan item with Showa-era advice?

*Shipping*
We will reinforce it with thick paper so it doesn't bend and deliver it quickly!

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