The Altec Coke Bottle Vintage Microphone 21B/150A was released in 1949 and the model 21 was the first microphone produced by Altec.  This was the same year they "acquired Western Electric Sound Products Division and began producing Western Electric products". For auction is the 21B microphone on the 150A base. I do NOT have the entire M11 system as I lack the 153A cable set and the P-518A power supply.

The microphone is therefore untested. It is in excellent cosmetic condition and is contained in its original case.

Here is a link to the M11 system and specs

Here is a link to "The Installation and Operating Instructions" for the M11.

 

 

The condition of this item is:

Tested Functioning Restored Physical Restored Electrical Silk Damaged Rusted Threads Worn Cable Absent Screws Missing Dent*Scratch*Crack Been Dropped Smoke Free NOS Element Intact Mint   Logo intact Rare Vintage

 

The accessories for this item are:

Original Case Power Supply Original Papers Stand Included

 

The specfications of this item are:

Omni Condenser

Frequency: 20-15000 c/s
Impedance: p-518A(not available) 30-600 ohm
Weight and Height: 21B+150A: 5.5oz 8.5x1.5 inch
Capsule: Omnidirectional condenser
Tube: 150A: l-6AU6
Year Manufactured: 1949

** means negative (NOT / NO / hasn't been)
       means positive (yes / is / has been)

Postal Policy:

The only postal option offered is the United States Postal Service, Priority or Express mail.   Insurance is highly recommended.  I will assist you on any needed. insurance claims but I cannot be responsible for lost or damaged uninsured items.

International postage will likewise be provided solely by the USPS but surface mail options are not provided as the delay in delivery often results in disputes and anxiety on both ends. (International buyers note if the packed weight exceeds 4 pounds, Global Priority Mail is not an option. Also, for all international orders, the buyer must supply a phone number for the customs form)


I pack in a paranoid fashion, double boxed, bubble wrapped and often styrofoamed with shredded papered. The item is usually in a separate plastic bag as well.

 

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