Sweet looking machine. I like the clean lines. It probably does accept a double needle. the 2 spool pins is a good indicator. If it has 2 sets of discs in the tension assembly you'll know for sure. It may not be ideal (I doubt your friend has sewing machine oil or tri-flo laying around) but if you ask your friend to put a little oil on the presser bar you can get a little bit of a head start on freeing it up.
Rodney