B-3 Plate, 5 lines, 3 patent dates with others pending. This key came from the collection of Curt, KD7FY. Curt swapped keys with the original owner, a railroad telegrapher know as Sprikles who worked on an Oregon Railroad.

C-1 Plate, 5 Patent Numbers Old commercial key, a hole appears in the base where a screw was used to hold it to a bench. Circus closer is a flat bar with a vertical knob.

C-2 Plate, 10 Patent Numbers Old commercial key, a hole appears in the base where a screw was used to hold it to a bench. Circus closer is bent bar with a horizontal finger knob.

C-2 Plate, 10 Patent Numbers Circuit closer is a bent bar with the finger knob.

D-2 Plate, 7 Patent Numbers The plate and the serial number do not match on this key. The plate has been overstruck at some point making it impossible to correctly date.

D-2 Plate, 7 Patent Numbers 1921 was the first production year of the improved lever.

D-2 Plate, 7 Patent Numbers First year plate displayed the 796 Fulton Street address.

D-4 Plate, 6 Patent Numbers Probably the first run of the gold painted tin plate, a pre-wartime reduction in the use of brass.

D-5 Plate, 6 Patent Numbers, Other Patents Pending, 833 Broadway. Gold painted tin plate, not brass.

D-5 Plate, 6 Patent Numbers, Other Patents Pending, 833 Broadway. Gold paint nearly worn off tin plate, not brass.

D-6 Plate, Patented, 833 Broadway. First year of the re-designed frame and damper to the rounded top style.

D-6 Plate, Patented, 833 Broadway.

D-6 Plate, Patented, 833 Broadway. Gray Crackle painted base.