Elizabeth I sixpence

Looking at the relative size of the bust I suspect you have a threepence. 3d and 6d were very similar in design, same legends, same rose, dates above the shield, same mintmarks. Only during the third issue, 1561 - 1577, (first issue for both 3d and 6d) sixpence had a smaller bust, and the tip of the crown was much farther away from the inner circle. Check the size, 6d should be 26 mm, and 3d only 19 mm.

Many thanks. This is very helpful. What do you mean by "hammered". Sorry for the ignorance...I'm new to this. Also, if anyone had an idea of value, I would appreciate it.

"Hammered" is referred to the method of coin production. A blank is placed between two dies, and then someone would swing a heavy hammer down on the top die to impress the images on the coin. Nearly all issues in the UK produced until 1662 were hammered. Although as early as 1560 Elizabeth experimented with some "milled" coinage (struck by a machine).

I'm really new to collecting. I just wondered where you can send coins off to be certified as I'm sure I'll get hold of some I'm not too sure about.
By the way, I live in Ireland.
Sheen