Hints for Dating Antiques and Collectables

  • Date letters were used on English silver from 1478.
  • The wood screw was introduced in about 1660. 
  • The clock pendulum was invented in 1660. 
  • Walnut generally replaced oak in English furniture from about 1690. 
  • Cut glass was first produced in England in 1709. 
  • Mahogany generally replaced walnut in English cabinet making from about 1725. 
  • "Tears" (bubbles of air) in glass were used for decorative purposes between 1715 and about .1760.
  • Soft paste porcelain production began in Chelsea in about 1745.
  • Excavation of Pompeii and Herculaneum began in 1748.
  • Chippendale’s book "The Gentleman and Cabinet Maker’s Director" was published in 1754.
  • Blue jasperware was first produced in 1774.
  • Knops (variously shaped swollen blobs of glass) were not used to decorate the stems of glasses after 1780.
  • The monarch’s head was first used in silver hallmarks in 1784.
  • The pontil mark, left on the base of a glass by the rod holding it during blowing, was never removed before 1745 and always removed after 1780.
  • Ireland was granted free trade with Britain in 1780 and Irish glass production flourished from that date.
  • Hepplewhite’s book "The Cabinet-maker and Upholsterer’s Guide" was published in 1788.
  • Round machine-made nails replaced square hand-made nails from about 1790.
  • Sheraton’s book "The Cabinet-maker and Upholsterer’s Drawing Book" was published in 1791.

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Art & Reign Periods

Gothic 1550-1820
Baroque 1620-1700
Rococo 1700-1750
Gothic Revival 1750-1770
Neo-Classical 1770-1830
Eclectic 1830-1870
Arts & Crafts 1870-1884
Art Nouveau 1884-1918
Art Deco 1918-1939
 

 

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U.S. Patent & Design Registration Dates

  First US Patent No.
issued in that year
First US Design No.
issued in that year
First British Design No.
issued in that year
1790
to
1835
not numbered    
1836 1    
1837 110    
1838 546    
1839 1106    
1840 1465    
1841 1923    
1842 2413    
1843 2901 1  
1844 3395 15  
1845 3873 27  
1846 4348 44  
1847 4913 103  
1848 5409 163  
1849 5993 209  
1850 6981 258  
1851 7865 341  
1852 8622 433  
1853 9512 548  
1854 10358 626  
1855 12117 683  
1856 14009 753  
1857 16324 860  
1858 19010 973  
1859 22477 1075  
1860 26642 1183  
1861 31005 1366  
1862 34045 1508  
1863 37266 1703  
1864 41047 1879  
1865 45685 2018  
1866 51784 2239  
1867 60658 2533  
1868 72959 2858  
1869 85503 3304  
1870 98460 3810  
1871 110617 4547  
1872 122304 5452  
1873 134504 6336  
1874 146120 7083  
1875 158350 7969  
1876 171641 8884  
1877 185813 9686  
1878 198733 10385  
1879 211078 10975  
1880 223211 11567  
1881 236137 12082  
1882 251685 12647  
1883 269820 13508  
1884 291016 14528 1
1885 310163 15678 19754
1886 333494 16451 40480
1887 355291 17046 64520
1888 375720 17995 90483
1889 395305 18830 116648
1890 418665 19553 141273
1891 443987 20439 163767
1892 466315 21275 185713
1893 488976 22092 205240
1894 511744 22994 224720
1895 531619 23922 246975
1896 552502 25037 268392
1897 574369 26482 291241
1898 596467 28113 311658
1899 616871 29916 331707
1900 640167 32055 351202
1901 664827 33813 368154
1902 690385 35547 385180
1903 717521 36187 403200
1904 748567 36723 424400
1905 778834 37280 447800
1906 808618 37766 471860
1907 839799 38391 493900
1908 875679 38980 518640
1909 908436 39737 535170
1910 945010 40424 (Oct. 1909) 548920
1911 980178 41063 575817
1912 1013095 42073 594195
1913 1049326 43425 612431
1914 1083267 45098 630190
1915 1123212 46813 644935
1916 1166419 48358 653521
1917 1210389 50177 658988
1918 1251458 51629 662872
1919 1290027 52836 666128
1920 1326899 54359 673750
1921 1,364,063 56,844 680147
1922 1,401,948 60,121 687144
1923 1,440,362 61,478 694999
1924 1,478,996 63,675 702671
1925 1,521,590 66,346 710165
1926 1,568,040 69,170 718057
1927 1,612,700 71,772 726330
1928 1,654,521 74,159 734370
1929 1,696,897 77,347 742725
1930 1,742,181 80,254 751160
1931 1,787,424 82,966 760583
1932 1,839,190 85,903 769670
1933 1,892.663 88,847 779292
1934 1,941,449 91,258 789019
1935 1,985,878 94,179 799097
1936 2,026,516 98,045 808794
1937 2,066,309 102,601 817293
1938 2,104,004 107,738 825231
1939 2,142,080 112,765 832610
1940 2,185,170 118,358 837520
1941 2,227,418 124,503 838590
1942 2,268,540 130,989 829230
1943 2,307,007 134,717 839980
1944 2,338,081 136,916 841040
1945 2,366,154 139,862 842670
1946 2,391,856 143,386 845550
1947 2,413,675 146,165 849730
1948 2,433,824 148,267 853260
1949 2,457,797 152,235 856999
1950 2,492,944 156,686 860854
1951 2,536,016 161,404 863970
1952 2,580,379 165,568 866280
1953 2,624,046 168,527 869300
1954 2,664,562 171,241 872531
1955 2,698,434 173,777 876067
1956 2,728,913 176,490 879282
1957 2,775,762 179,467 882949
1958 2,818,567 181,829 887079
1959 2,866,973 184,204 891665
1960 2,919,443 186,973 895000