Quite a few, it seems that no-one wants to identify it as Algerian glass, too obscure I suppose so they drop that word from French Algerian. Irritating as it obscures truth.
However in 1856 a Lamartine did have a Paris glass gallery and as with many modern retailers he could have set up a sweat-shop to exploit cheap labour and with lower standards poor firing could result.
This New York Times article adds some colour
http://query.nytimes.com/mem/archive-free/pdf?_r=1&res=9904E1D81039E134BC4A51DFB467838D649FDE&oref=sloginbut it does my eyes in, I do wish people would make more effort when digitising material than just upload sloppy scans!
While researching my
Bibliography I noticed that some titles are being offered as Print on Demand, aka, P.O.D. with the rider that images do not reproduce well. Pure and utter laziness! Or the pages have been REDUCED to fit a convenient format. The Glass Study is digitising old material on glass and EVERY image is cleaned and optimised to the extent that most are clearer than the originals! One example printed in 1910 and available in original volume for from $5 to $70, the print on demand version is $200... I mean, come on! Then one US seller offers photocopies of mostly 19th century articles at around $10 a page with the condition that you do not use the material

Do people actually pay for this?
Just 30 Euros a year is all I ask in the glass Study and eventually it will contain over 100 original catalogues with the contents cleaned and broken up so you can locate by period, maker, region and type of glass. Comparing similar items from different makers side by side. And, many out of copyright books and other original material, with annotation to alert to problems with data, plus in copyright books and journals are available as full text indexes so that you can locate the pages on which references are to be found, you still have to buy the books. Some of the material you cannot buy, I or other members own it. Only 400 titles planned, a dip in the ocean of glass publications through history but some members are contributing material too. As well as other facilities to enhance research. It is also supporting multiple languages although only German is effective so far. I need some help for the other major European languages. On top of that I intend to divert part of the income to a charitable fund to preserve glass websites ad infinitum. Feedback from front page visitors "Too expensive, no way I will pay. But I want to look" - I am a researcher not a marketeer. I suppose if I put them on CD's I would make money but this way the material can be commented and used by authors to produce their books by interpreting and enriching the material.
Sorry for ranting here but I just got a Bee in the bonnet about misinformation that looking into Lamartine and my bibliography research has highlighted.