I'm fairly sure this is a 'Primus' Gear.
Meccano 48 Tooth Bevel Gear Part 30c Prewar Pointed Teeth Triple 'Meccano' Stamp
2 x 7/8" Bevel Gears Solid Brass 26 Teeth Unstamped NOT Meccano
Meccano bevel gear part 30
Meccano Bevel Gear #30c x 1. Genuine #1
Meccano 4 X #30 7/8" Bevel Gear 26 Teeth post war stamp
Meccano #30a 0.5" Bevel Gear 16 Teeth pre war stamp
