At last, in 2013 there appears good photos for these early 1990s really rare Christmas themed plushes. 

This is believed to be a win-able UFO catcher set, released soon after Sonic 2 in Japan. Eggman is a Santa variant, with green hat, green bow-tie & white bag. (Bag has word on it, but what?) He's very rare. He sold for $300 in 2012! The Tails is unique because his lower body (doesnt have one is a xmas stocking with cute faux bells & holly leaf. He looks fun popping out of the stocking. Sonic has a red Santa hat, furry glove & sock cuffs, & a white bag that says "Merry Christmas". Notice the bag is on the left (other Xmas Sonics have been made too)