This is an original World War Two USN Consolidated PB4Y2 Patrol Bomber Upper turret gun sight type Mark 18. This same gun sight was used in the F-86 Sabre Jet fighter when it first came out.
You can see this gun sight on display at the National Museum of the US Air Force in front of the F-86. This gun sight was also used in the F4U-5 Corsair USN USMC fighter in the 1950's. This gunsight is in excellent condition. It is 9 x 11 x 9 inches and weights about 8 pounds. The item "WW2 USN Bomber Turret & Korean War NAA F-86 Jet Fighter Mark 18 Gun Sight" is in sale since Monday, February 8, 2021.
This item is in the category "Collectibles\Transportation\Aviation\Military Aircraft\Other Military Aircraft Items". The seller is "dauntlessaviation" and is located in Apache Junction, Arizona. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, United arab emirates, Qatar, Kuwait, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.