This postcard show a Maiko-Girl and it was choose 16 times (so far) as a favorite.
The sender also put a sticker with a Maiko Girl:
Curiosity about Japan:
The sender told me that Maikos are aged 15 to 20 and have to learn how to dance, play Shamisen and Kyo-Kotoba (Kyoto dialect).
I leave here a video so you can ear the sound of the Shamisen:
(If you can't watch the video, the link is this