Vintage 80’s/90’s Granny Square Cardigan Sweater

Awesomeness!!!! Hand knit open cardigan sweater. Square colors are white, green, blue and black. No size or materials tag. My best guess is 80’s/90’s era. When flat, armpits measure 35” across and 17” from top of shoulder to bottom, measurement from neck opening on left to end of sleeve is 29”, 13” from drop shoulder seam. Excellent condition, no flaws noted.