Armstrong Siddeley Motors Memo from Mr Chapman to Mr Golovine: Downgrading of Sapphire manufacturing data

Description: 1. No copy of this letter from Mr Burley 3. Recommending that we should order 500 sets of Sapphire material immediately. Sir Frank has authorised same. 4. Dealing with an order for Sapphire engines for Hunter F.3. We are not able to accept a manufacturing licence from France for the Sapphire. Mr Saxton to order ten Double Mamba engines immediately. MoS have ruled that we cannot proceed with the Sapphire licence for Switzerland

Date: 01/02/1951

Last import: September 11, 2017