Kiss Vintage Japanese Wood Stamp in Showa by VintageFromJapan http://www.etsy.com/listing/96004758/vintage-japanese-wood-stamp-kiss-in
This vintage Japanese wood stamp is from the "昭和" "showa period" . The "showa" period is from 1926-1989 but these are at least 30 years old.
It says "kiss / the lips / (biology) proboscis" in Japanese kanji character "吻" "fun, bun / kuchisaki"
It measures 1.5cm x 1.5cm x 2cm.