US Airmail #C1 Jenny - Mint - Heavy Hinge. Exact stamp imaged.
US Airmail #C1 Jenny - Used - super light cancellation. Exact stamp imaged.
US Airmail #C13 Zep - Mint- not so much a hinge mark as a slight disturbance in the gum. Exact stamp imaged.
US Airmail #C14 Zep - Mint - not so much a hinge mark as a slight disturbance in the gum. Exact stamp imaged.
US Airmail #C15 Zep - Mint - not so much a hinge mark as a slight disturbance in the gum. Exact stamp imaged.
US Airmail #C2 Jenny - Mint - light hinge, nicely centered. Exact stamp imaged.
US Airmail #C2 Jenny - Used - most details clear, fair centering. Exact stamp imaged.
US Airmail #C4 Propeller - Mint - heavy hinge. Exact stamp imaged.
US Airmail #C4 Propeller - Mint - never hinged. Exact stamp imaged.