One piece with integral collar. Flair at the waist. Rolls at the neck, arms and waist. Remains of stamps near the neck - IW and one less clear which appears to be an a surmounted with something (some version of the London Armourer's company mark). IW is recorded as registered to John Wright between 1637-1647 and also seems to have been used by Joseph Whorewood between 1648 and 1678.
If you have any questions, please send them to Wade Allen