Description: RARE Original Billhead JT & A Hamilton Manufacturers of Flint Glass Pittsburgh, Pennsylvania 1895 For offer, a very nice old Advertising engraved / lithograph design lot! Fresh from an old prominent estate. Never offered on the market until now. Vintage, Old, Original - NOT a Reproduction - Guaranteed !! Nice graphic printing - showing factory - train, railroad, horse and wagons, etc. Factories in Pittsburg, Butler, and Blairsville. Prescription vials, bottles, flasks, etc. Sold glass to A.B. Brooks, Ithaca, NY. Manuscript ink handwriting, etc. Nice watermark of Champion Superfine P.P. Co. In good to very good condition. Fold marks. Items will be shipped folded, as found or unfolded - your choice. Please see photos and scans for all details and condition. If you collect 19th century Americana advertisement ad history, United States of America printing, American history, etc. this is a nice one for your paper or ephemera collection. Genealogy research importance as well. Combine shipping on multiple bid wins! 1879 Flint glass is optical glass that has relatively high refractive index and low Abbe number (high dispersion). Flint glasses are arbitrarily defined as having an Abbe number of 50 to 55 or less. The currently known flint glasses have refractive indices ranging between 1.45 and 2.00. A concave lens of flint glass is commonly combined with a convex lens of crown glass to produce an achromatic doublet lens because of their compensating optical properties, which reduces chromatic aberration (colour defects). With respect to glass, the term flint derives from the flint nodules found in the chalk deposits of southeast England that were used as a source of high purity silica by George Ravenscroft, c. 1662, to produce a potash lead glass that was the precursor to English lead crystal. Traditionally, flint glasses were lead glasses containing around 4–60% lead(II) oxide; however, the manufacture and disposal of these glasses were sources of pollution. In many modern flint glasses, lead oxides are replaced with other metal oxides such as titanium dioxide and zirconium dioxide without significantly altering the optical properties of the glass. See alsoCrown glass (optics)Chromatic aberrationCup plate
Price: 78 USD
Location: Rochester, New York
End Time: 2024-02-19T22:37:37.000Z
Shipping Cost: 3.95 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Material: Glass
Type of Glass: Flint
Year Manufactured: 1895
Production Style: Flint Glass
Brand: Hamilton
Color: Clear
Type: Billhead
Original/Reproduction: Antique Original
