Historic Door Knobs

Grandfather was a locksmith and passed away 2 years ago...was sorting thru his belongings and came across these door knobs...All locksmith work performed was governmental...I can remember when he told me that these knobs were very special...because of the hands that touched them. He told me that these knobs were removed and replaced with newer style knobs....so im not sure what the value if any would be on these executive knobs....very beautiful desinged as you will see in pics. Just trying to get some input on these knobs.

Linda S