http://milinme.wordpress.com/2011/01...12-in-the-idf/
Quote:
The Egyptian military parade in Cairo, in the 1960s, showing the Czech M51 (vz.51) 130 mm MRL mounted on the Praga V3S truck. This system was part of the Egyptian arsenal since 1954
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1954 seems a bit optimistic as that is the same year that unit appears in the Czech OOB but somebody has to be the first customer.
That link also shows BM-24's in use by the Israelis which adds some photos and further info on when they were used.
Don