22.5 kg. main mass. Iron, IAB-sLL
TKW 48.25 kg. Fall not observed. Found 1888, Kustanay, Kazakhstan.
Ildar Khalitov is an author of the forthcoming book "Kazakhstani Meteorites".
   
Ildar writes:
The main mass in Saint-Petersburg, Russia ( 22.5 kg).
A 1888 find in northern Kazakhstan near the village of Bishtube. It is an iron meteorite, IAB-sLL, with nickel content of 7.5%. Cosmic age was determined in 1969 as 825±80 million years. TKW is 60 kg.
Bishtube is widely distributed in museums across the globe, as shown in this PDF.
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