Yes it's a nice coin and from one who has quite a few of these you are off to a good start, but which one is it? Now there are several 1887 crowns and it is difficult to tell from your photos but you can see on the coin itself; 1) is the plume to the St. George head double struck or double engraved? 2) is the bottom right serif missing on the 1 of the date? 3) what is the distance between the R of VICTORIA and the T of BRITT? The range is from 34.65mm down to 33.59 for the proof. 4) is the top of the first 8 missing? Now that has whetted your interest there are at least ten or more different sizes in the 1887 Crown as the dies were made using a pantograph to reduce from the master plaster mould. As a guess by eye I would say yours if quite close to 34.00 or less. You will need a vernier calliper to measure it and also need to take at least 10 readings to get any meaningful average. All a bit anoraky for most but that's what we are here for isn't it? Sorry at number 3 it should read T of VICTORIA to R in REG WOW. That is going to keep me busy. I will let you know my findings. I thought that they were all the same. Cheers Dan.