70's Floral Long Sleeve Nightgown Sleep Dress by Casual Corner bodysuit I had originally bought this

I had originally bought this bracelet for my mom (a mermaid lover) but alas

Inner Sleeve: 21 1/2" - underarm to sleeve end

vintage 1960s floral blazer with three gold buttons up the front and faux pockets

but is it a Gunne or not

Fabric is baumwolle which is 100% cotton

70's Floral Long Sleeve Nightgown Sleep Dress by Casual Corner bodysuit I had originally bought this70s Casual Corner Floral Nightgown Sleep Dress Size Medium Cotton BLend some overall wash wear typical for age. Tagged size M but please see measurements to ensure a proper fit. Measured flat unstretched. Armpit to armpit 19 1 2" Waist 18 1 2" Hips 18 1 2" Length 52" Sleeve length 21"