per your specs, that's tough art.
...not that it can't be done but you're putting a whole lotta faith in the accuracy of in multiple pieces of equipment. Foil stamp --- I'd suggest two foils, a run of black ink through the press, and four accurately cut edges. It'd be an awesome print piece, though. (Personally, I tend to set up art with a little more slop.)
The things that I would flag as potential production issues (read: +PITA fees)
- The decorative edge treatment is too close to the edge of the card. The stack of paper "floats" in the guillotine cutter and may not accurately cut the cards dead center. The result may show a noticeable difference in the spacing of the edge from side to side, top to bottom, or both.
- The density of white ink on red stock may not be enough to keep it from picking up a pink tone. That's where I would suggest a second white foil.
Here's a google image search for
Letterpress gold foil cards… it'd also be awesome to do gold edges as some of the images show.
However, a more budget conscious approach would be to print CYMK with a foil like 4over offers to the trade with its Akuafoil product. It's a 5 over "x" product meaning that it lays down a silver foil as a spot color where you specify, and then prints the four process colors of your layout --- over and around that.
With your card, you would keep it pretty much as is. The yellow of "Sellers" and your name would print over the silver foil and appear to be gold.
From the sample card I've got, it looks like the CYMK equivalent to PMS 116 offers a nice yellow gold when printed over the silver foil.
I'd also suggest losing the decorative border. Either that or moving in so that if the cut is off, it's not as noticeable.
If you were paying me to be your aesthetic director, I'd love to see the letterpress, multiple foil, on a super thick stock card with gold edges on a fold-over card*.
*The fold-over card would kinda look like an A-frame sign you could set on your customer's desk when you're pitching him some purveyed sign of distinguished craftsmanship.
If you were paying me to be your accountant, I'd go for plan B with revisions. I might let you still do the fold-over card because I like that idea. But that comes with a caveat. Get them printed with out the score, then take them to a letterpress shop and have them scored with a rule instead of a roller. (see the FAQ at 4over: why is there cracking on my scoring job? A letterpress score limits that)
Then too, I'd lose the filigree and replace it with a yellow/gold foil bleed along the edge. That would give it some shimmer and reference the gold edge cards from the google image search earlier in the post.
That's my .o2