@Caz1177 Dont know much about tag, but they have clean slabs. I feel cgc is fair on vintage and they have better price points to submit then psa plus you won't wait a year. Psa for investment cgc for price and better looking slabs then psa.
My midwives never washed the white coating off my babies after birth.
They told me to leave it on as long as I could. With all three kids, I delayed the first bath for about a week.
That coating is called vernix. It starts forming halfway through pregnancy. It's antimicrobial, moisturizes the baby's skin, and has proteins that protect against infection. Babies born earlier tend to have more of it. Babies born later have less.
The WHO recommends leaving it on for at least 6 hours, ideally 24. Yet many hospitals still bathe babies within hours of birth.
Your baby spent months building that coating. Maybe don't wash it off in the first hour.