Today while cleaning out my mother-in-law's garage I found this Royce-Union floor pump. It's not a Silca, but still nice. My brother-in-law remembered using it on their bikes as kids, so it's not NOS. They just stored it in the box, so it is in really good condition. I'm guessing it was from the 1970s, since the chart on the side has pressures for 27 x 1 1/4 high pressure tires. I'm not sure what the purpose of the reservoir is, because it leaks out when you take the hose off the tire. I pumped up a bike tire and it works well with low effort. I have an extra Presta hose end, so I might swap that over so it is more useful.
Royce-Union floor pump