That particular one is made or distributed by Scott Drake.
https://www.summitracing.com/search/brand/scott-drake/department/engines-components/product-line/scott-drake-valve-cover-oil-caps?N=401272%2B4294949512&SortBy=Default&SortOrder=Ascending&autoview=SKU&ar=1

And there are cheaper ones like these:
https://www.summitracing.com/parts/snn-10071
and
https://www.summitracing.com/parts/trd-4999

Since you have to ship, lets make sure we can match a PCV Valve for it.
Most likely something for a Ford 'CJ' Cobra Jet or such. But most important will be that its the correct size for the grommet or hose. I collected some information about sizes but wont be able to look for it until tonight.