~1960s ミニドライブ アクセルつき [MA型] (Mini Drive with accelerator [MA type]) by 関西精機 (Kansai Seiki)

Name: ミニドライブ アクセルつき [MA型] (Mini Drive with accelerator [MA type])
Year: 1961
Manufacturer: 関西精機 (Kansai Seiki)

The "MA" type has a pedal on the bottom right of the machine.  All of the pictures I have seen show a backglass with two "dials" graphics.  The two "MA type" machines in the photo below seem to have different shades of backglass.  The front panel of the machine on the right also seems darker.

entry in 1969 Machine Directory

This advertisement is from 中村製作所 (Nakamura Seisakusho) but they also distributed machines for 関西精機 (Kansai Seiki).  Note the company name at the bottom of the flyer.

The year for Mini Drive is given in ミニドライブ大百科 (Mini-Drive Encyclopedia). 

The Mini Drive series:

1958 ミニドライブ M型 (Mini Drive M type) by 関西精機 (Kansai Seiki)

1961 ミニドライブ アクセルつき [MA型] (Mini Drive with accelerator [MA type]) by 関西精機 (Kansai Seiki)

1972 ミニドライブ (Mini Drive) [15 year version] by 関西精機 (Kansai Seiki)

1976 ミニドライブ・マークII (Mini Drive Mark II) by 関西精機 (Kansai Seiki)