I am wondering what kind of valuation this company had got. To raise that amount of money I expect at least $12M post-money valuation (and still they have sold

I am wondering what kind of valuation this company had got. To raise that amount of money I expect at least $12M post-money valuation (and still they have sold about 50% of the company for a seed round). So, the question is what kind of mind-blowing traction they had?