Yoshi's Tamago Egg Gameboy Nintendo Japanese Import Cartridge Only 1991 DMG-YOJ
Cartridge Only.
Made in Japan.
Game is in working condition and has been tested. 
Game is a little dirty.
There are some marker writing in front.
I played these several years ago and have hundreds to add online and can't remember which ones had English language in the actual game and which ones were fully Japanese so the game may not be in English.