Dating graflex

Are there any on-lline resources for dating Graphic press cameras ?I have a Pacemaker Speed 4x5 that I'm trying to research... ) My Anniversary Speed has the side-mounted Kalart RF, there's a procedure somewhere on the website showing how to align the cam for your lens, so you can shoot with the wireframe viewfinder and focus with the RF, not having to reference the ground glass at all, ala press photog style.Wide open it's f/3 and very blurry on the edges, and stopped down to about a 1/8" hole is pretty sharp; a great portrait lens.

A product with the letters A6C would be one manufactured in January, 1966 to the 3rd modification.Graflex was a manufacturer that gave its brand name to several models of camera.The company was founded as the Folmer and Schwing Manufacturing Company in New York City in 1887 by William F. Schwing as a metal working factory, manufacturing gas light fixtures, chandeliers, bicycles and eventually, cameras.Produced by Graflex in Rochester, New York, the Speed Graphic is commonly called the most famous press camera.Although the first Speed Graphic cameras were produced in 1912, production of later versions continued until 1973; with the most significant improvements occurring in 1947 with the introduction of the Pacemaker Speed Graphic (and Pacemaker Crown Graphic, which is one pound lighter but lacks the focal plane shutter).In 1909, it was acquired by George Eastman, and the company was moved to 12 Caledonia Avenue (later renamed Clarissa Street), Rochester, NY in 1928, as the Folmer & Schwing Division of the Eastman Kodak Company.In 1926, Kodak was forced to divest itself of the division, which was spun off forming a new company, the Folmer Graflex Corporation, which changed its name to Graflex Inc. In 1956, it became a Division of the General Instrument Precision Company, and moved its offices to Pittsford, NY.has the side-mounted Kalart RF, Graflok back, FP "back-shutter", and Optar 135/4.7 in Graphex shutter... The idea when using the RF is that you extend the bellows out to some predetermined stops on the focusing rails, which are calibrated preset with your specific lens and RF cam setting, so that the image is in focus on the ground glass when it's also in focus in the RF, for a wide range of distances on the bellows.Then, as you rack the focus knob in and out, they'll track together.1919 )111170 3.5 x 5.5 Top Handle Speed 1918 to 1920114168 3x4 RB Tele march 1921119544 RB Series B spring 1922, listed as a Tele122098 3x4 RB Auto 1922-1923126379 2x3 RB Auto 1923141580 4x5 Auto Graflex 1924142772 - 3x4 Series B -143124 Series B 1925144339 3x4 Series B 1925146133 Series B 1925-1926154561 RB Series B 1926157258 5x7 2D --160990 3x4 RB Auto 1928161429 Series D -- 1927162053 Series B 1928167748 RB Series D late 1929 early 1930173470 RB Series B 1930173655 RB Tele Graflex 1930 logged as Series D173747 RB Series D -- 1930175549 5x7 Speed graphic 1931178123 3x4 RB Series B -- 1931182582 3x4 series B July 1933186880 4x5 pre anniversary -- 1935187383 3x4 Series D -- 1935187838 - -- 1935188090 5x7 Speed 1935188112 5x7 Speed 1935188672 4x5 RB Series D late 1935198477 4x5 Series D -- 1937199363 speed 1937199732 speed -- 1957224448 - pre anniversary 1937 to 1939225775 anniversary 1939225988 first 2x3 rb speed graphic?(non-verified e Bay auction comment)226272 - 2x3 Revolving Back Speed Graphic SN verified to last half 1937226451 3x4 pre anniversary late 1937226919 2x3 RB Series B 1937226704 3x4 RB Series D 1937226919 2x3 RB Series B - 1937229303 3x4 pre anniversary 1938229533 pre anniversary -- 1938231769 RB Series D -- 1938232404 5x7 pre anniversary 1938232843 Crown View, 3x4 back -- 1938232898 5x7 Speed 1938232992 2x3 Graflex -- 1938233048 2x3 Speed Graphic on e Bay w/Optical Finder, Spring Back --233071 miniature speed --238702 pre anniversary speed 1939238817 - 4x5 pre anniversary - 1939238929 pre anniversary late 1939239759 miniature speed late 1939242164 pre anniversary -- 1939242453 pre anniversary 1939244626 miniature speed 247286 4x5 Crown View late 1939 - early 1940248852 anniversary late 1939248869 anniversary early 1940249977 miniature speed 1940250609 miniature speed 251890 anniversary --254186 anniversary --255436 3x4 Anniversary 19402577xx 3x4 anniversary 1940260301 4x5 Crown View 1941260838 miniature speed --262183 3x4 speed 1940263824 anniversary -- 1940264164 4x5 anniversary fall 1940266978 anniversary 1940269081 anniversary late 1940 - early 1941272543 miniature speed 1940-1941274891 anniversary --278433 - -- 1941287212 miniature speed 1941289222 - -- 1941292785 miniature speed 1941296507 USAAC C3 --301444 anniversary -- 1941309109 anniversary -- 1942310465 anniversary 1942311261 anniversary -- 1942318023 anniversary -- 1943320317 government anniversary 1943323070 anniversary, black, PH-47-E -- 1943323859 government anniversary 1943326717 anniversary 1943336467 miniature speed --341099 anniversary 1944341320 anniversary --341667 anniversary -- 1944342045 anniversary 1944342917 anniversary -- 1943346031 anniversary 1945345141 anniversary 1945349200 black anniversary -- 1945350679 anniversary 1945351201 anniversary -- 1945354145 miniature speed 1945 1st batch after WWII354765 miniature speed - 1946358103 - anniversary -- 9-1945358807 anniversary 1945359242 anniversary, black, PH-47-E -- 1945360070 anniversary 1946366041 3x4 anniversary 1946368409 miniature speed 1945 or 1946370236 Miniature Speed 1945371107 miniature speed 1945371834 - anniversary, black 11/3/1945377164 miniature speed 1946377356 miniature speed 1946380367 3x4 anniversary -- 1946389835 anniversary -- 1946392216 - 4x5 Anniversary 1946392343 anniversary -- 1946393196 anniversary 1945 or 1946394550 3x4 anniversary -- 1946395280 3x4 anniversary - 1946397653 anniversary -- 1946398792 3x4 anniversary - 1946401843 anniversary 1946410196 2x3 crown -- 1947410224 crown 1947411398 2x3 crown -- 1947412061 2x3 pacemaker speed -- 1946411249 crown -1946414010 2x3 pacemaker speed 1947414353 2x3 pacemaker speed --1947414384 2x3 pacemaker speed -- 1947416532 4x5 Super D graflex 1947416644 Super D graflex 1947417622 4x5 Super D -- 1947420378 crown 1947421985 crown -- 1947423001 4x5 pacemaker speed -- 1947425408 2x3 pacemaker speed -- 1947428594 2x3 Crown 1947432504 crown -- 1947432244 crown 1947435012 crown 1947440064 2x3 crown 1947440093 2x3 crown --445232 crown -- 19474474xx pacemaker speed 1947452903 4x5 pacemaker -- 1947453426 4x5 pacemaker speed 1947455004 4x5 pacemaker speed -456333 4x5 pacemaker speed --469904 Crown View II --476861 70mm combat graphic --1956448826 2x3 pacemaker speed -- 1948448870 2x3 pacemaker speed late 1947485150 Graflex View II 1961 or 1962449420 2x3 pacemaker speed -- 1947449676 - 2x3 pacemaker speed late 1947/early 1948503636 - Century 1949 -1950504832 Century 1949-1950505660 Century --506802 Century late 1949507248 Century -- 1949508311 Century 1949 or 1950508923 Century -- 1949 or 1950509011 Century 1950510967 Century -- 1950513162 Century 1950-1951517253 Century -- 1951523213 century -- 1954527202 Century early 1960528296 Century -- 1961528734 Century (F2A) -- 1962529178 century 1962, august532951 Century 5/1965531994 Century -- 1963533833 Century 1964534550 Century (A7B) -- 1967535474 Century guessed at 1966 or 1967 beyond535916 Century (A8A) 1968640660 Super Graphic 1957 Supers start at s/n 640000646687 Super Speed 1959 or 1960646731 Super Speed 1958647661 Super Speed - 1958648819 Super speed 1960648226 Super Graphic -- 1960653715 Super Speed 1964653928 Super Graphic -- 1964700583 Speed -- 1949700782 2x3 pacemaker speed 1947702513 2x3 pacemaker speed --702540 2x3 pacemaker speed 1948702760 2x3 pacemaker speed 706289 2x3 pacemaker speed 1950708316 crown --708752 crown view --709934 2x3 pacemaker -- fall 1950710103 2x3 crown -- 1950711643 2x3 crown 1951-1952714194 2x3 pacemaker speed714427 2x3 pacemaker speed -- 1953714820 2x3 crown 1953725928 - --730569 2x3 crown -- 1950731262 2x3 crown -- 1950733153 2x3 crown 1948? 733964 2x3 crown 1952751020 3x4 pacemaker speed 1949751049 3x4 anniversary 1946?