Standard tuning probably is CGDA, but for "Irish" play most(?) people do tune GDAE. The GDAE tuning lets you swap off on your mandolin with only minor discomfort from the difference in fret spacing. If you buy a set of "standard" strings, throw the C (low) string away, and get a separate top (E) string it should work pretty well. I'll have to look to see what I used for a top string.
Most of the people I've known who play them replace the old peg style tuners with modern geared (banjo) tuners, but a "good" set of banjo tuners may cost you more than the rest of the banjo. I used four salvaged from a mtn dulcimer maker's "discard" table at a festival, and while they weren't a perfect fit they work fine.
I don't recognize the "brand" name, but many from that time period have the name of the mass marketer/distributor, so often the name won't tell you much about who made them.