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Looks like that cylinder likely uses the original Yale No. 1 pin tumbler blank which was flat with a trefoil bow and in use until 1882, see thumbnail attached. Probably only has four tumblers and...
djed, you need to upload pictures direct from your PC/device instead of posting links to external host sites. I have taken screen shots of your two target pictures in question and added them here...
Doug is not only more knowledgeable about locks than I am, He is more knowledgeable about computers. Thank you Doug
Sorry - I had forgotten about that thread. I never did pursue that one. Also, not sure what happened to the picture links I posted. Let me start with basics. Anyone know the weight? This seemed...
well done for uploading Doug I don't think anyone saw that one coming ! Beautiful lock and boltwork though..
Nice Lock as what Pete said about key 1031 there also key look almost like what Pete send per attached but this is Brass key #94.....Timothy.....
Yale lock case lock