Below are a couple of examples of Epstein’s signature on his passport applications.
You can see what I mean about it being stylized and illegible—and nothing like the signature or handwriting in the letter.
(However, again: it is possible to write one’s name very differently from one’s signature.)
https://enoki.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:gvda6fem6r7selm4gzjjww4a&cid=bafkreicumxclj6k6tmdjzijxwomq62kttwvjdubolehcunpgnohbusxpsa
https://enoki.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:gvda6fem6r7selm4gzjjww4a&cid=bafkreigxr7jmufrbzv4jshaqbuxvxes5zpj6y2mqvca4crfyv6oya6dq3a