I agree Frank but I am bemused by the comments
I don't understand the comment about "irregular grinding".
I do remember Ivo or someone elese saying that Holmegarrd did stop signing their glass ...but I thought in the 70's

I very much doubt that IKEA ever sold any Holmegaard glass but I have no proof. I am basing my opinion only on the fact that IKEA sell very very cheaply whereas Holmegaard are have not been a low cost maker - on the contrary.
I do not think this bowl is by Holmegaard but again that's just my opinion.
I will look for the thread where we last discussed this.
When questionning an ID with a seller by email, I have found it useful to refer them to this board. I usually write something like.
"I do not think your item is XXXXX. See / try asking at ..
www.glassmessages.com"
Since I started doing that, I have had nothing but "Thank you" notes in return, often mentioning that they are pleased to find a place where theuy can identify their items. They also often volunteer that they have changed or cancelled their listing.