Business

Business (ca 1928)
Master, Bruxelles, Belgium
dimensions...........15,5 x 12 x 0,8 cm
weight..................500 g
material................metal (with wooden partition)
including hardboard map
S.G.D.G. = Sans Garantie Du Gouvernement.
roule sur billes = ball bearing.

Including a cardboard map and a manual

Efficience (@x)

Efficience (2x)
Master, Bruxelles, Belgium
dimensions...........16 x 23,7 x 7 cm
weight..................1,7 kg
material................metal
single sided

One is electirc (burning red : carry over, burning blue: not carry over)

Master (Silver and gold) (2x)

Master (silver and gold)
Master, Bruxelles, Belgium
dimensions...........16 x 23,7 x 7 cm
weight..................2,6 kg
material................metal
single sided

Master DA702

Master DA 702,
Master, Bruxelles, Belgium
dimensions...........12 x 15,5 x 1,5 cm
weight..................600 g
material................metal                                                          
digits....................9
single sided
including a manual
On the backside there is a big bulge (see  picture).
This item was on the occasion of the World Expo in Bruxelles (1958).

Master (silver and gold) (2 x)

Master, Bruxelles, Belgium (silver and gold
Dimensions.......15,5 x 12 x 0,8
Weight...............500 g
Material...........metal
Single sided

Sirius

Sirius ( ca 1960)
Master, Belgium
dimensions...........12 x 15,4 x 1,4 cm
weight..................500 g
material................metal
digits.....................9
single sided
Brevete SGDG

logos of different brands of the Master factory

Logos of different brands of the Master factory

Mads

Mads ( # 72688, ca 1930)
France
dimensions...........12 x 23 x 0,8 cm
weight..................550 g
digits....................9
material................brass
single sided