Shanghai Currency Recycling & Coin Collection

China's currency notes, as a uniquely charming cultural carrier, have surged in popularity within the numismatic collecting domain, attracting increasing attention from collectors. Denominations include: 1 Jiao Blue Letter 3 Roman, 1 Jiao Red Letter 2 Roman, 1 Jiao Red Letter 3 Roman, 1 Jiao Red Letter Embossed 2 Roman, 1 Jiao Red Letter Embossed 3 Roman, Watermark 2 Jiao Flat Plate 2 Roman, 2 Jiao Triple Roman, 2 Jiao Embossed 3 Roman, 5 Jiao Flat Plate 3 Roman, 5 Jiao Flat Plate Watermark, 5 Jiao Embossed Watermark, 1 Yuan 2 Roman, 1 Yuan 3 Roman, 1 Yuan Ancient Coin Watermark, 2 Yuan Star Watermark, 2 Yuan Ancient Coin Watermark, 5 Yuan 2 Roman, 5 Yuan 3 Roman, 10 Yuan 2 Roman, 10 Yuan 3 Roman. Three rare pieces: Red Jiao 1 Yuan (Red 10 Cents) 1, Green Back Jiao 1 Yuan 1, Green Watermark Jiao 1 Yuan 1.

Ten Quality: Uncirculated, with very slight discoloration on the surface due to age or improper storage, without water stains that have caused loss of luster; may also include very slight creases.

Grade 9: Shows noticeable creases, corners are slightly rounded, no stains on the face, retains the original luster of the ticket.

Grade 8: Multiple handling, with several prominent creases, slight stains and spots on the face, yet remains firm and not soft, no rips at the edges, corners slightly rounded.

Grade 7: Multiple touches, the bill is soiled and shows signs of softening, with minor cracks at the edges, but not extending into the bill's design.

Grade 6: Long circulation coin corner is rounded, edge cracks extend to the pattern but no loss; face is soiled or faded, but the pattern details are still recognizable; coin is soft, with a central hole.

Five: Severely worn, soiled, faded, with torn edges and missing pieces, rounded corners, but no large chunks missing.

Four defects: soiled, faded, blurred pattern, missing or large cracks.

Three defects: currency torn, with large areas of damage or holes, unclear denomination, generally without collectible value.

Currency paper and types: Currency printing involves many types, often combining flat, intaglio, and embossing printing techniques. The printing technology commonly employs special techniques such as line printing, gravure overlay, double-sided printing, and pattern alignment. What do these printing methods and technologies mean?