I found this old Gretsch in the cellar of an old shop in the suburbs of London.  It was brand new, and had been sitting there for years.  The shopkeeper told me it was one of a number of instruments he had had to buy as stock, many years ago, in order to qualify as a Gretsch dealer.  I've had trouble dating it, as at one stage Gretsch duplicated its serial numbers.  However, I believe it is a late 60's/early 70's instrument.