Steven Smith, 1990, jointed, purple, Liquid Blue, Grateful Dead, vintage, and plush bear for this style.

Strong eBay title (under 80 characters):
Vintage Grateful Dead Purple Bear Plush Steven Smith 1990 Jointed 13"

Keyword-rich title alternatives:

• Grateful Dead Bear Plush Purple Steven Smith Vintage 1990 Jointed 13"
• Vintage Grateful Dead Dancing Bear Purple Plush Steven Smith 13" Jointed
• Grateful Dead Purple Jointed Bear Plush 13" Steven Smith Vintage 1990
• Steven Smith Grateful Dead Bear Purple Plush Vintage Jointed 13" Deadhead

Search keywords / item specifics:
Grateful Dead, Grateful Dead Bear, Dancing Bear, Deadhead, Purple Bear, Purple Plush, Plush Bear, Stuffed Animal, Steven Smith, Steven Smith Stuffed Animals Inc, Liquid Blue, Vintage, 1990, 90s, Jointed Bear, Jointed Plush, Collectible, Music Memorabilia, Rock & Roll, Psychedelic, Hippie, Vintage Grateful Dead, Grateful Dead Merchandise, Dead Bear, Bear Plush, 13 Inch, 13", Retro, Made in Philippines.

Best 13" keyword string to paste into your description:
Grateful Dead Purple Bear Plush Steven Smith Stuffed Animals Inc Vintage 1990 Jointed Dancing Bear Deadhead Liquid Blue Rock Music Memorabilia Collectible Retro 90s

One note: only include “Liquid Blue” or “1990” if the tag/details on your specific bear support it. Similar Steven Smith bears are listed with those identifiers, but there are several different versions.