Dictionary / Vocabulary / 看板に偽りなし
かんばんにいつわりなし
it's true to its name; it's just like it says on the box
Also written 看板に偽り無し
あの男鳴り物入りで入社したけど、実力のほど看板に偽りなしだったね。
He came on board this company with a lot of fanfare and he turns out to have the skill and talent to live up to it.