All these remarks show that the printers did not proclaim themselves, and were making pseudo-manuscripts. They did not make known their names or address. The rubricators sided with them, for many of the copies are illuminated with as much care and beauty as if they were the finest manuscripts. There is no record extant of the number of copies printed, but it was done on both vellum and paper. Copies are by no means uncommon, most of the great libraries having one, and many are in private collections. One is shown among the typographical monuments in the King's Library of the British Museum, and there is a finely illuminated copy in the show-room of the Bibliothèque Nationale. From its very great importance as the first book that is known to have been printed, its value has a constant increase. Of the copies recently sold, one at the Perkins sale in 1873 on vellum sold for £3,400, another on paper at the same sale fetched £2,900, while one on paper in the Syston Park Library sold in December, 1884, for £3,900. It has been asserted that the copies on paper were the first issued by Gutenberg and his partners, and those on vellum subsequently printed by Fust and Schoeffer, after they had obtained possession of the inventor's stock. But so many copies absolutely similar in aspect, and of so regular a style, put in the market from day to day by Fust and Schoeffer, gave rise to protests from the caligraphists. Criticism always attends upon success, but having obtained the result, the two associates did not hesitate to proclaim themselves the printers of the Bible. On the publication of the Psalter, which followed the Bible at a year's interval, they gave their names and added a date, 1457, the first instance of a date being recorded in a book. This second work was of so skilful a typography, that it might have been shown as the work of an expert penman; the faults remarked in the letters of indulgence are no longer seen; type had attained perfection; in two years printing had reached its culminating point.