Kay Bass Models:

 

Concert Shaped basses:  Gamba Corners on the upper bout: 

C-1; 0-1; Orchestra; 0-100; 0-100B; C-4; C-2; S-100; S-127 Selmer/Kay, Symphonic

Probably less than 12,000 manufactured.  Price is dependent on sound, condition, and demand in your area.  Blonde basses bring the most money.  Professional repairs do not hurt the value.

 

Production Estimate:

C-4=Less than 100 manufactured

 

Maestro Shaped basses: Shaped like a fiddle:

M-1; M-1B; M-1W; M/w; WM; M-2; M-4; M-6; M-2 Army; M-2 Navy; M-1 Special; TV-21; TV-1; Fiberglass; B-220

Probably less than 8000 manufactured. Price is dependent on sound, condition, and demand in your area. Blonde bring the most money.   Professional repairs do not hurt the value. 

 

Production Estimate:

M-4=less than 250 manufactured in 1937 and 1938.

 

Supreme, Swingmaster, Slapmaster basses with most having the Maestro Shape:

S-1; S-2; S-5; S-6; S-7; S-8; S-9; Pro-bass; Slap-bass; Slap-Pro; S-127B Selmer/Kay (Concert Shape)

Probably less than 3000 manufactured. Price is dependent on sound, condition, and demand in your area.  Blonde basses bring the most money.  Professional repairs do not hurt the value.

 

Production Estimates:

S-8=less than 400 Manufactured between 1939 and 1954.

S-9=less than 1200 Manufactured between 1939 and 1968.

S-1=less than 700 Manufactured between 1940 and 1969.

S-2; S-5; S-6; S-7;=less than 50 of each model, Manufactured between 1937 and 1940.

 

Quarter Sized Basses:

S-3; M-3; S-10; H-10 Junior Bass

Probably less than 1000 manufactured. Price is dependent on sound, condition, and demand in your area.  Professional repairs do not hurt the value.

 

Production Estimate:

S-3=Less than 25 manufactured after production began in 1952.

 

Five String Basses:

M-5; S-51; S-59; S-51B; M-5B; M-58  Chubby Jackson

Probably less than 1000 manufactured. The jazz market seems to be the best.  Price is dependent on sound, condition, and demand in your area.  Blonde basses bring the most money. Professional repairs do not hurt the value.

 

Production Estimates:

M-5, and M-5B=less than 300 manufactured between 1938-1969

S-51, S-59, S-51B, and S-58=less than 660 manufactured  between 1938-1960

 

Baby Bass:

B-5; Cello bass; Jazz Cello; K-200

These were not very popular because the cello bodies could not withstand the tension of the bass strings.  Consequently there was trouble with the tops caving in.

 

Other Possible brands might be K-Meyer - Challenger; Kustom Kraft; Old Kraftsman; K-Kraft; Kraftsman; Kay-Meyer; Selmer-Kay; Custom Kraft. Kay manufactured all the basses for Selmer and for Gretsch.