Seagull 4B double reflex camera

Seagull 4B is the most popular and popular product among the 120 double reflex cameras. It has a simple structure, cheap price and easy operation. It was produced from 1976 to 1979. The four models of Seagull 4B cameras have the following features: Shutter speed: B, 1-1/300 seconds, with self-timer, handwheel film winding, and red window counting. Aperture: 3.5, 4, 5.6, 8, 11, 16, 22. 1. Premium 4B: Body number: 4B-1900783, Viewing lens: SA-1901149 F75/1:3.5, Photography lens: SA-1901255 F75/1:3.5, There is a seagull pattern in the lens circle, and the flash plug is on the top. The "Seagull" nameplate is an electroplated trademark with a small font. The label on the viewfinder cover has a simple "Seagull" pattern without the letters "SEAGULL". The shutter aperture plate is engraved with: Shanghai Camera Factory. The viewfinder frosted glass has the word "田" in red. The workmanship of the whole machine is extremely fine, and each electroplated part is very bright. The workmanship of later products is not as good as it. 2. High-end 4B: Body number: 4B-20455134, Viewing lens: 31353579, 1:2.8/75, Photography lens: SA-31657533, 1:3.5/75, HAIOU-31, Shutter aperture plate: Shanghai, China, Viewing The frosted glass has a red "two" grid. 3. Ordinary 4B: Body number: 4B-19327255, Viewing lens: 32419672, 1:3.5/75, HAIOU-31, Photography lens: SA-31414802, 1:3.5/75, HAIOU-31, Shutter aperture disc: In Shanghai, China, the frosted glass has a red "tian" grid. 4.4BI: Body number: 4BI-359361, Viewing lens: 1:3.5/75, HAIOU, SA-85, Photographic lens: 1:3.5/75, HAIOU, SA-85, Shutter aperture plate: Shanghai, China, with Flash socket, ground glass crack image focusing.