1960 Polaris UGM-27 Inertial Navigation System Unit Model Sperry Gyroscope

Description

1960 Polaris UGM-27 Inertial Navigation System Unit Model Sperry Gyroscope
This listing is for an absolutely cool model of an Inertial Navigation Unit produced by Sperry Gyroscope. The piece is made from anodized machined aluminum and PTFE rods and spacers. Each component is labeled including the three center units which represent Gyroscope Units: "LONG GU" for Longitude Gyroscope Unit, "LAT GU" for Latitude Gyroscope Unit, and "EQ GU" presumably for Equator Gyroscope Unit. Other labels include ROLL, PITCH, AZ (Azimuth?), LAT, FORE, AFT, and EW AU which is on the red cylinder attached to the red cage. Please note it appears there should be an additional one of these on the opposite side which is missing. Being simple anodized aluminum it could be easily machined and replaced. Based on my research, I know Sperry was involved extensively with the Polaris program. I don't know if this is a model for a proposal, if it was adapted or if there was a different unit selected. In any case, this piece is incredible and would make a wonderful addition to any military, navigation, rocket or space collection.
This item is from the estate of a decorated Navy Captain.
The base measures 7.5" wide by 5" deep by 4.5" tall. The Inertial Navigation System Model itself measures 7" long by 5-1/2" by 5-1/2". The tallest height of the model in a vertical position is about 8" tall. The weight is 1992 grams.
This is a very interesting and scarce piece of military and space history since many of the technologies and components in this sort of system would go on to be used in the Apollo and other space programs.
Some information about the system this model is associated with can be found here:
http://www.navsource.org/archives/08/PolarisHistoryGEX1.htm
My price is based on my perception of the importance and desirability of this piece and commensurate with sales records for items in the same category or related to Polaris. It may be way too low, in which case let me congratulate the buyer. Otherwise if my price is too high, please feel free to contact me to negotiate a price. Shipping is free. Please let me know if you have any questions. Thank you!