 |
 |
| 1849 3.5" | 1852 Late Morphy |
 |
 |
| 1852-1855 Harrwitz | 1860-1870 Anderssen |
 |
 |
| 1860-1870 Anderssen | 1860-1870 Anderssen Drop Jaw |
 |
 |
| Lasker/Hartston transition 1885 | Early knights and bishops 1849-1870 |
|
|
| 1849 3.5" | 1852 Late Morphy |
|
|
| 1852-1855 Harrwitz | 1860-1870 Anderssen |
|
|
| 1860-1870 Anderssen | 1860-1870 Anderssen Drop Jaw |
|
|
| Lasker/Hartston transition 1885 | Early knights and bishops 1849-1870 |