Rpkxnoscope

Hello, I am buying camshafts for my m113k engine, I am paying 300 for em they look great better than mine, but im scared they might be non amg camshafts. Is there any way to tell on the actual cam that it is truely an amg camshaft or not. I mean I have mine here but the ones im buying are going to be shipped to me from Georgia and I dont wana risk getting the wrong ones and ill never go off the word of another. I asked the seller for the vin and car it came from but you never know, if they are non amg or have any differences from mine im sending them back, If anyone has any info please share it with me thank you very much.