cast iron body,brass shackle. Cut down flat steel blank to sargent flat steel blank size. Just a bit wider than the 1239 blanks.
Shimmed open,repinned and new pin springs,then re assembled ? Lock actually works very well.
Click image for larger version.  Name: eagle-ptpk-flat key-1.jpg  Views: 11  Size: 1.47 MB  ID: 19943Click image for larger version.  Name: eagle-ptpk-flat key-2.jpg  Views: 10  Size: 1.29 MB  ID: 19944Click image for larger version.  Name: eagle-ptpk-flat key-3.jpg  Views: 11  Size: 1.55 MB  ID: 19945Click image for larger version.  Name: eagle-ptpk-flat key-4.jpg  Views: 10  Size: 1.64 MB  ID: 19946Click image for larger version.  Name: eagle-ptpk-flat key-5.jpg  Views: 9  Size: 995.7 KB  ID: 19947Click image for larger version.  Name: eagle-ptpk-flat key-6.jpg  Views: 9  Size: 1.19 MB  ID: 19948Click image for larger version.  Name: eagle-ptpk-flat key-7.jpg  Views: 7  Size: 1.36 MB  ID: 19949Click image for larger version.  Name: eagle-ptpk-flat key-8.jpg  Views: 5  Size: 1.10 MB  ID: 19950The shackle cap unscrews and everything comes out.