The platinum market has been unable to sustain an attempt at an overnight rally, and has given back a sizable portion of those gains this morning. Many traders feel that the market should find support from a weaker US Dollar and higher silver and copper prices, but concerns about the threat of rising interest rates may have a negative impact on the market. The platinum market has not received as much positive international news from the auto sector as was seen during prior weeks. However, news of rising platinum production from a South African platinum producer overnight has some traders feeling that negative physical supply sentiment may be weighing on platinum prices this morning. A major credit ratings agency has cut the sovereign debt rating of Japan one level, due to expectations for larger issuance of government debt which may help to lift Japanese investment demand levels for platinum.