Newp's Error coins and Scottish hammered

I used to collect errors but sold my collection off, but I have always found them fascinating.
I saw these three offered on ebay and couldn't resist:
First one a QEII 3 pence struck 50% off centre.

Second a 1973 QEII 10 pence double error, struck off centre and clipped error.

The last one and really unusual, a 1977 Queen's Silver Jubilee Crown (25p) with a huge struck through scrap error. Considering these coins weren't struck for circulation I don't know how it was missed. I've never seen one of this type on a crown before.

and finally a coin I had bought to sell on my website but I'm thinking of keeping it myself. It's an Alexander III penny with 28 points to the stars. I don't believe a definite mint has been identified to this coin but it is believed 28 points may indicate it being minted in Ayr.
I saw these three offered on ebay and couldn't resist:
First one a QEII 3 pence struck 50% off centre.

Second a 1973 QEII 10 pence double error, struck off centre and clipped error.

The last one and really unusual, a 1977 Queen's Silver Jubilee Crown (25p) with a huge struck through scrap error. Considering these coins weren't struck for circulation I don't know how it was missed. I've never seen one of this type on a crown before.

and finally a coin I had bought to sell on my website but I'm thinking of keeping it myself. It's an Alexander III penny with 28 points to the stars. I don't believe a definite mint has been identified to this coin but it is believed 28 points may indicate it being minted in Ayr.

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Comments
<< <i>I like the Alexander lll penny , my Seaby's doesnt speculate what 28 stars might be and isnt exactly positive about any of the others.I think mine has 26 and i know Saor Alba has one or twa of those. >>
Saor Alba has so many Scottish pennies, he hasn't even imaged most of them. I am not sure Seaby has ever conjectured where they were minted, but Ayr has been suggested in Coincraft and the earlier Robertson catalogues - I have some early references that are invaluable because a lot of information seemingly wasn't deemed important enough to include in later catalogues - particularly with lesser known varieties.
I have all of the mints, save the 21 pts, and 27 pts. I also have multiples of the 28 pts because I snarf them up whenever I can get me clutches on them. At one point I seriously considered researching through all the references and coins themselves to collectivise all the information - especially die varieties and parings. I still have a large study group of coins from William I - Alexander III that were dug up in N. England in the 1990's and auctioned off that I really have to go through - I have found a couple of Irish coins in there from Edward I and what is probably a Swedish or Danish coin - it is still a mystery to me where it might be from.
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I have become interested in English Hammered Coinage and bought a number of books (North, Stewartby) and a few coins (of which one sold at a show this weekend). I guess Scottish coinage kind of goes along with that. (*disclaimer: I am not saying that Scotland and England are the same country*)
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If you watch ebay you can pick up these british reference books fairly reasonably , avoid BIN's as the price will be insane , i paid like 5 bucks plus shipping for my copy but ive seen it BIN @ $60 which is just silly..
The Scottish Coinage, by Ian Halley Stewart published in London by Spink & Sons, 1955. This book is essential in telling the story of Scottish coinage, short on images, but great for research with descriptions of the coinages. Some of the information available in this work is not available in newer works, for example the star and mullet arrangements on the Alexander III pennies. There are better recollections of stories of the Scottish mint in this work than more modern works.
Seaby's Standard Catalogue of British Coins Part 4 - Coins and Tokens of Scotland by Frank Purvey printed in London, 1972 by Robert Stockwell. This is an abbreviated update of the work by Ian Halley Stewart above, but with the notable inclusion of Scottish tokens, essential for identifying these mostly 18th and early 19th century pieces.
Coins of Scotland Ireland and the Islands, Standard Catalogue of British Coins Volume 2 by Peter Seaby and P. Frank Purvey, published by Seaby Publications Ltd in London 1984. The quinessential work with many more images of early Scottish coins, great for identification of Latin legends etc. Varieties are better described in this work than in the 1972 edition.
Coinage in Scotland by J. D. Bateson published by Spink in London 1997 ISBN 0 907605 74 5, This work is strong on research and descriptions of the Scottish coinage, and is particularly valuable in providing information with regards to the coinages of Mary, and her son, James VI. There are many descriptions of hoard finds, with maps inclusive.
Scottish Coins - A History of Small Change in Scotland, by Nicholas Holmes published by NMS Publishing, Edinburgh, 1998 ISBN 1 901663 02 7. This book takes an essentially different approach, with less research on individual coins etc, and more on describing what they were used for, how names of coins evolved and significant research on what circulated and why. Many descriptions of later hoards, counterfeits etc. are available in this work that are not available in other works.
Coincraft's Standard Catalogue of the coins of Scotland, Ireland, Channel Islands & Isle of Man by Richard Lobel, Mark Davidson, Allan Hailstone, Eleni Calligas published by Standard Catalogue Publishers Ltd, London, 1999 ISBN 0 9526228 74. A larger and bit more concise work than was previously available, with many more illustrations of individual coins. I notice that some descriptions of varieties available in other works are not available here, but there are valuable "Collecting Hint"s which describe the availability of particular coins to collectors and what grades can be anticipated to be found. The numbering system is unique, and rather confusing and unfortunately does not yet correspond directly with the now commonly used Seaby reference numbers.
The Dundee Collection of Scottish Coins By Bowers and Ruddy Galleries Inc. 1976. This is an auction catalogue, but a very concise one with an emphasis on a public sale of a collection of Scottish coinage that was initiated by the previous owner in the 1950's. The highlights of this catalogue are the many coins of Queen Mary, with unique varieties, and incredible rarities. This is one of the best auction catalogues which essentially became a reference work because of the research and imagery available. Makes me wish I could have been around then to purchase many of these rarities.
Records of the Coinage of Scotland from the earliest period to the union by RW Cochran-Patrick MDCCCLXXVI ( Volumes l & ll )
The Coinage of Scotland by Edward Burns James l 1406 - Anne 1707 1887
English coins and Tokens by Llewellynn Jewitt 1886
and lastly i finally procured Seabys British tokens and their values 1970 & 1986 both volumes.