This 1834 Great Britain King William IV Silver Sixpence was graded by NGC as AU58 (Almost uncirculated)
If you are new collector of milled Great Britain coins, I agree that you buy this graded Sixpence.
First reason is: it was graded already, the grading fee at NGC will spend you USD 22 already.
Second reason is, this coin's price is really low. I always suggest new collector start from some inexpensive coins.
Third reason is, the coin's authenticity was confirmed and guarantee by NGC already.
I am personal collector since 1998, the above statement is from the heart of a coin collector with 26 years of experience, but no a seller or full time dealer.
Yours faithfully,
James