It looks like an old model PRM but...... /forums/images/graemlins/confused.gif
Perhaps if you contacted PRM or one of their agents and emailed them a copy of the photo they would be able to identify it .
Items marked * are a direct replacement for the old model with the same external dimensions.
Old PRM
model number Ceased Production Replaced By
Delta February 1997 PRM 150D
100 August 1973 PRM 260D
101 August 1982 PRM 260D
140 December 1978 PRM 260D
160V March 1990 PRM 260D *
160D March 1997 PRM 260D *
175 August 1973 PRM 500D
250 March 1973 PRM 500D
265 January 1978 PRM 500D
310V December 1984 PRM 500D *
301M April 1987 PRM 500D *
302D February 1997 PRM 500D *
401M March 1987 PRM 750D *
402D April 1997 PRM 750D *
601S February 1984 PRM 1000D *
601M January 1988 PRM 1000D *
601D February 1997 PRM 1000D *
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"Artificial intelligence is no match for natural stupidity"