Re: Medallion Signature Guarantee
I believe that Credit Suisse no longer does this. They did it for me once, and it took several weeks. I signed the form in the presence of my CS adviser, he sent it to CS Boston with his testament as to who I was, they sent it back with the guarantee finally. I was then told that it could not be done again in the future. Wouldn't hurt to ask though.
Last year, I went through an extensive interview by phone with Vanguard, my custodian, and they did not require a guarantee. They asked questions about things which I had no idea that they knew.