The notes I have with this cartridge states that it was originally from Bill Woodin via the collection of the late Peter Skala. It has been floating around in the unidentified tray for a long time and I have not been able to find any info either in the ECRA Database or HWS. The case is steel with the Zinc coated P4 primer. It has the FAL headstamp as discussed in HWS 2 p. 63.