Painted by Gilbert Jackson or one of his followers in 1639, Richard was 88 at the time and wears what looks like a grey coat cut like a doublet with a pointed waistline and shoulder wings. I would guess that he has a doublet with a high collar underneath which is holding up his darted linen band and there is a glimpse of points which would be holding up his breeches, an outdated method by 1639 but he is 88 so could be forgiven for being behind the times. This picture was formerly in the collection of Wormsley Park in Essex before it was sold at auction. The image and the details are courtesy of the auctioneers Dreweatts 1759
Here is a detail showing the falling band, his buttons, buttonholes and a glimpse of what looks like a sumptuous fabric being used on the doublet that I presume is under the coat.
The points lacing his breeches in place are clearly visible as is some more of that figured fabric on his breeches.
Shirt and coat cuffs show clearly here and his specs in fine detail.