Exports between "Capitalist" and "Socialist" *** blocks were extreme rare in 60's and 70's but some of them existed. For example if have seen one SIEMENS ALH-50 in Estonia (ex-USSR), I have also seen LBL Mandoline one time in Sweden.
You also find some old DDR, Polish, etc... fixtures in Africa.
They were more frequent in 80's (some PHILIPS HGS and SRS in DDR and Poland, TUNGSRAM-SCHREDER founded in Hungary in 1983, etc...).
I have seen one ELBA PVB-7 in Belgium and in West Germany also but they should have been imported by LBL (LEIPZIGER LEUCHTEN) in 90's.
*** Yugoslavia and Albania non included, were the situation was different.