Guernsey 1 double 1830

This little copper coin, mintage 1,648,640, is fairly easy to find. It is not expensive (about $5-10) but most samples offered in this price range are in rather poor condition. After purchasing several samples I have realized that some of them are from different dies (which is not unexpected given high mintage number). My analysis is, as far as I know, is the first one, so please take it with a great deal of scepticism! Hope it will be used as a starting point for future studies by collectors who have access to better and more versatile material.

Here I don't discuss a 'dot before date' variety. Please read the main body of my Guernsey coins list.

Obverse side is one with a Guernsey shield, reverse side is one with a date.

Obverse dies

Obverse die variations are surprisingly hard to detect, despite many details on the Guernsey shield of arms. I don't see any clear difference in the shield on my coins. I was only able to detect two variations of letter G.

Obverse A. Lower part of loop of letter G in GUERNSEY terminates with large horizontal serif. This one is more common.
Obverse A. There is no horizontal serif at lower part of loop of letter G in GUERNSEY. I can't be absolutely sure that this is a die difference. The coin on the photo seems to be weakly struck, but I have another sample which is fully struck but still lacks serif. Unfortunately it is in quite poor condition.

Reverse dies

There are several points of identification. Examine the relative position of letters L and E, distance between E and L, outline of upper digit 1. All differences are small and have to be checked at high magnification.

Reverse 1. Base of E is strictly level with base of L. Outline of upper digit 1 is regular. Top of the lower 1 is slightly sloping.
Reverse 2. Base of E is noticeably higher than base of L. Outline of upper digit 1 is irregular below top serif. Top of the lower 1 is flat, no slope at all.
Reverse 3. There's a miniscule dot before date. The dot is very, very small; open high-resolution photo to see it. It is not a defect. I have seen another coin on eBay which also has this dot. Base of E is level with base of L. E is closer to L than in reverse 1. Outline of upper digit 1 is regular. Top of the lower 1 is slightly sloping.
Reverse 2. Base of E is a little higher than base of L. L is slightly further from E than in reverse 2. Zero is clearly higher than rest of date figures. Upper digit 1 is poorly engraved under top serif. Top of the lower 1 is flat, no slope at all.

Coins from my collection

I have seven samples and hope to acquire more in the future. Obverse A is paired with all reverses. Obverse B is only paired with reverse 1.

reverse 1 + obverse A

reverse 1 + obverse B

reverse 1 + obverse B

reverse 2 + obverse A

reverse 2 + obverse A

reverse 3 + obverse A

reverse 4 + obverse A


Copyright (C) 2020 Sergey Ayukov <s.ayukov@gmail.com>.
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