No.
Collectible coins are not allowed in an IRA. That is the default rule, and it predates every gold IRA advertisement you have ever seen.
But here is what makes this question genuinely dangerous rather than merely technical.
The penalty for getting it wrong is not that the purchase gets blocked. It is that the amount you spent is treated as if you withdrew it from your retirement account that day.
Taxable income. In that year. Plus a ten percent additional tax if you are under 59 and a half.
No warning. No do over. The tax treatment attaches at the moment of purchase.
And the line between a collectible and an eligible bullion coin is narrower than most people realize, which is exactly where a certain kind of salesperson likes to stand.