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It has CAI Vt as the importer, and a Stag horn with a 75 which I am taking to mean the barrel was proofed in 1975.

Online assist I too, am now the owner of a Walther PP, and would like to do some research as to the firearm's dob/pob and any other information. Info Discussion in 'The Powder Keg' started by ingous, Aug 11, 2008. For N through Z (omit O), N = January, P = February, and so forth. Month: For A through M (omit I), A = January. Month: A = January, B = February and so forth. Month: For A through M (omit I), A = January, B = February, and so forth. #312345 (3 = year | 1 = calendar quarter | 2345 = seq number)Ĭalendar Quarter: 01 = 1st quarter, 02 = 2nd quarter, 03 = 3rd quarter, 04 = 4th quarter Six Digit Serial Number (used in 1973 only) Nine Digit Serial Number (used from 1970 – 1980)

Seven Digit Serial Number (for units manufactured before 1970) Week: 01 = First week of January, 52 = Last week of December We’ll show you how to decode each carrier serial number styles in the following examples. It will be a little hard to figure out exactly the carrier ac age from old carrier serial number. Older Carrier units used many different styles in their serial numbers and have changed over the years. The first 2 are the week of the year and the second are the year. New Carrier units (air conditioners, heat pumps, furnaces) use a 4 digit number of first four serial number to determine the age. How to Read Carrier Serial Numberīelow are the most common styles or format of carrier serial number and how to decode it. look into the interior of the metal door – you might see a label or tag with the carrier serial number and the model number also. Remove the metal door of the outdoor unit. You can find the carrier serial number on a rating plate sticker attached to the inside of the unit on the left side near the top.

Knowing your system age is important because it can give you substantially about whether you might be able to repair or replace the system with a new one. It contain information in what year the unit was manufactured, as the easy way to identify the carrier ac age is due to the serial number. There are reasons why you should know your Carrier Serial Number.