That's a Duraspark II, and there is no EEC, which stands for Electronic Engine Control. That can be determined by the blue grommet where the wires come out of the box - the classic telltale of a DS-II box.
The DS-II system was the simple system that used a reluctor in the distributor to signal to the box in the picture when to fire the ignition. No computer anywhere to calculate anything.
As for the 12A199, that is Ford's generic part number for a "Modulator assy.-ignition (breakerless)", as shown in the Master Parts Catalog. To get the whole part number you need a prefix, like D9VZ, and a suffix, like -A. Put that together with the generic number and you have D9VZ 12A199-A, which is the whole part number for a box like that.
You can see all of the part numbers here: Electrical/
Ignition and on the Ignition Modules tab.
Gary, AKA "Gary fellow":
Profile
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI