There seem to be more than one school of thought coming out. With a hint of the Devils advocate by exaggeration. To save words, Signing, can be a mark a label or any other identification addition.
1. MUST BE SIGNED
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[*]All glass MUST be marked or signed to enable identification of the artists, designers, craftsmen involved in each item.
[*]Glass Art MUST be personally signed by the artists
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2. SIGNATURE DOES NOT MATTER
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[*]No challenges for collectors if signed
[*]Familiarisation with the work of glass artists/craftsmen makes there work recognisable.
[*]Signatures only encourage fraud and damage of good unsigned glass
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3. SIGNATURE USEFUL BUT NOT VITAL
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[*]A mark can help to provide references for learning
[*]Marks are easily forged so caution is still needed
[*]Pulished reference sources can misattribute marks
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4. SIGNATURE CAN PROVIDE INFOTRMATION NOT OBVIOUS FROM A PIECE ITSELF
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[*]Different glassworks producing the same design
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5 SIGNING IS A COMMERCIAL OR POLITICAL DECISION
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[*]Buyers may require unmarked
[*]Cost of signing reduces competivity
[*]Facilities for marking glass are a recent development (200 years or less)
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6 SIGNING BY SOMEONE WHO DID NOT MAKE THE PIECE
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[*]Normal commercial practise
[*]Fraud
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7 SIGNATURES MAY DETRACT
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[*]Transparent pieces could be spoilt by a mark.
[*]Parallel to basic stamp collecting
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8 SIGNATURES SHOULD CREDIT ALL WORKERS
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[*]Designer
[*]Draughtsmen
[*]Design approver
[*]Craftspeople (Blowers, moulders, artisans)
[*]Ancilliary (Office staff, finishers, packers, delivery driver, quarry workers and miners of raw materials.
[*]URL for a full list of credits (Hollywood style :twisted: )
[*]RFID chip
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Not a perfect list and not all notes are from this thread.