These hand engraved signatures can be a nightmare as letters can be numbers and vice versa. Looking at the signature, the last 5 digits look like neill. Before the 'n' is the long stroke. Before the stroke is what looks like a 'w' but, the last bit of the w could be an 'o' and the stroke an apostrophe giving o'neill. The first digit could be a 6 or a capital G. If it is a 6 the w could be a 1 and an o and the long stroke could be a slash with neill being the name. I reverse imaged the signature but all I got was pictures of ship wrecks on the sea bed with the ships name, obviously faded. Good luck with it.