In general, 60 year old pennies are still worth - a penny. Age alone does not engender value. Vintage commodity items in large quantities are still considered commodities, rather than rarities.
I had a long, involved discussion with my father, who is a mechanical design engineer (retired), who worked with electrical systems and did prototyping. There ARE shops that will do short runs for not that much money, but the real price savings would be if they produced large quantities at one time of each part. I think that many of the boutique razor producers do limited runs of each part, so they can excessively customise.
Let's look at the production path for CNC of a single three piece razor, in brass, then nickel plated. That's about as simple as it gets. (Replica Tech)
First, you need a solid. That's a 3-d cad drawing specifically designed for prototyping. Let's call it three parts, all machined out of blocks, rather than assembled (more wastage, but simpler production). Use the NEW cap/head. That's probably the simplest. One rod extending out to either side of the central screw, one base plate, and one handle. Handle is female threaded, cap is male threaded. A good CNC lathe/mill combo can produce the entire part, plus base finishing/linishing. We'll look at three CNC machines going at once. Assuming that each one is completely cut, machined, threaded, and polished, then another blank is automatically inserted.
Estimate about 15 minutes per piece. With three machines, that's one complete razor per 15 minutes. Material cost is likely about $10 each, with wastage. If you want to do a run of 500, that's 125 hours of production. Unlikely to require any human intervention once started. Each part will be coated with oil for protection, which is fine. Then, deliver those 500 to a nickel plater. A good thick coat of nickel is probably an hours worth of time (overestimate, but includes insertion and removal time), and a large scale plater can probably do at least 300 of the pieces at a shot. So the 1500 pieces would be 5 hours of plating.
You now have your finished 500 razors. No packaging, but that's a minimal issue. You can order custom packaging, or just get cardboard boxes and put nice labels on them (my preferred option). Those 500 razors cost 130 hours of labor time, plus materials. So you're looking at a minimum (guesstimate) of $8,500 to produce those 500 razors. That's $17 per razor, not including packaging, marketing, shipping, or taxes. (aluminum, with anodization, would probably be similar)
Mass production still works best (with metal) through stamping. That's why the AK-47 is so cheap. It's made in huge factories that stamp and weld almost all of the parts - and they can't be field serviced. When they break, they have to go back to a central factory. It's classic Soviet mentality production. When it breaks, you get another one. With an M16 or similar, pretty much every part on the entire gun can be produced by a small machine shop. (excepting, perhaps, the barrel).
These are VERY rough guesses. I haven't taken a solid to a machine shop to ask (yet). I am planning on it, because I'm insanely curious, and I want real numbers to counter a lot of the .. horse puckey that I see flying around.
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