These cover plates are sold as a set of 2 and delivered as shown in the photo.
these plates are not finished and still need to be polished, the material is stainless steel so chrome plating or nickel plating is not necessary.
The original Triumph number is A323 cover plate.
This product only fits OHV models TT, ST, CO and CTT (1927 to 1931) with grease nipple on the rocker arm