Grateful Dead 1989 Halloween Bertha Men’s Shirt XL. Official merchandise, artist Mikio Saito. Bertha skull over a pumpkin. Shirt is a size XL, measurements: 21" across shoulders, 23" across armpits, 31" from top to bottom. Never worn, never washed, steam cleaned. In stunning vintage condition and one "from the archives" for a true deadhead collector.