It Looks like something in the cattleya alliance to me. You will need flowers to get anything more specific. Even if I am correct on the alliance, there are tens of thousands of plants that would fit that description. It’s also extremely dehydrated because it has absolutely no roots. It will take a good deal of nurturing and several years before it’s back to health enough to flower. Are you an experienced grower with a growing area suitable for recovery?

An impossible task. Has your friend seen it bloom? Looking at orchid bloom pics on the net might lead to a rough idea of perhaps the Genera.

Hello macranthos, i am an orchid amateur , just start collect orchid last year . Can you give some tips how to take care it for recovery please . I heart my friend said it's nice orchid .

Based on the growth habit and p-bulbs, my guess is a bulbophyllum. If so, keep warm, well watered and in bright indirect light.

Good luck,

Bob