That wasn't just Syrian. But all original 727-200 Adv
and 737-200 Adv had this style of overhead bins.
Back in the day Boeing called them the "wide body
look" offered with these Advanced 727/737s in contrast
to the open overhead (hat) racks offered on the previous
non- "Advanced 727/737's and the 707's.
However, many customers updated to these over head
bins for their older versions 727/737's as well as 707's.
In my opinion these "higher" overhead bins gave the
cabin a much spacious feel and offered better lighting
conditions as evident in the photo.
Boeing changed this "Advanced" style of overhead bins
for their narrow body a/c with the introduction of the 757
and the 737-300's and subsequently various customers
opted to update the now older "advanced" style to the
larger bins we know today.