Standard No.1
Standard No.1 was the 1st 'Unfound' piece. If it is included in the list, there are 28 pieces in total and not the 27 which is sometimes claimed. In the following Bunn explains how this piece, which was never actually placed anywhere, might have been found. The same kind of method could be followed to discover any of the other UNFOUND pieces:-
"Standard # 1 is a standard lamp with red, blue, white and yellow paint on the base. It was made in the UK in the 1960s. I was also born in the UK in the 1960s. The lamp was an object absolutely typical of the suburban world I was born and brought up in. That was why I chose it. It is pure 1960s council estate. As am I. In fact this particular lamp was one I had found in a charity shop but it was nevertheless very reminiscent of a lamp which had occupied the corner of the living room in my childhood. Which I am still very fond of. Well, anyway, when I moved from the UK to Sweden I took this lamp with me. So that, in effect, it too a product of 1960's Birmingham - just like me - had emigrated from the UK to Stockholm. So I decorated it with the colours of both flags.. "
"Clues? Well, ok, in terms of discovering the piece I devised four or five clues which cross-referenced one another and more or less strongly indicated both what the object was and how it had some significance to me. Of course they also gave one a good idea as to where the piece might be found. The idea being, that whoever could decipher the Clues would understand the piece even before they had encountered it. And, upon encountering it, they could have it.. Anyway, the first of the Clues to this object was a simple photocopy of both my birth certificate and my passport. I think the relevance of the passport was pretty obvious: one uses them for travel. That the birth certificate might have referred to an object made in the 1960s - as well as a person born then - was a little more obscure but not overly so. The second clue was a collection of four painted light bulbs on a piece of pine. Well, pine is more or less synonymous with Scandinavia and the colours of the bulbs: red, white, yellow and blue might also have pointed one in that direction. The bulbs themselves of course were a big clue as to what the object might have been. A lamp. Thirdly there was the envelope. An idea I really got from watching the film Charade. The stamp was of course Swedish. And the name on the envelope was that of Mr Petersson - the surname of a friend. There was no address. I don't think it took too much imagination to realise that if you found Mr Peterssons address, you might well find the object in his home. The fourth and final clue gave one an idea as to where he lived. It was a photograph of Stan Laurel taken late in life and under which I had written Old Stan. The old part of Stockholm is named Gamla Stan, which translates as The Old Town, if you combined the two things you got Old Stan.. All four Clues were then photographed and combined into a single signed image; that image was entitled Clues for Standard # 1. And a friend of mine bought it off me for a bottle of wine or two".

For each 'Unfound' piece, Bunn produces 'Clues' similar to the above.
These items, the 'Clues' are then photgraphed and issued as a composite image and distributed in varying ways.
If an 'Unfound' piece is found, when a claim is made, the object is verified and the claim either accepted or rejected accordingly.
Any 'Unfound' piece, once verified, becomes the property of the finder. It may then be kept or sold as the owner wishes.
(For reference: there are private collectors, in Europe, the USA and India who are buying these pieces. One has even been bought by a Japanese superstore).