1N4755A semiconductor manufactured by Allied Electronics, listed as 1N4755A (circa 1976).

1N4754A semiconductor manufactured by Allied Electronics, listed as 1N4754A (circa 1976).

1N4753A semiconductor manufactured by Allied Electronics, listed as 1N4753A (circa 1976).

1N4752A semiconductor manufactured by Allied Electronics, listed as 1N4752A (circa 1976).

1N4751A semiconductor manufactured by Allied Electronics, listed as 1N4751A (circa 1976).

1N4750A semiconductor manufactured by Allied Electronics, listed as 1N4750A (circa 1976).

1N4749A semiconductor manufactured by Allied Electronics, listed as 1N4749A (circa 1976).

1N4748A semiconductor manufactured by Allied Electronics, listed as 1N4748A (circa 1976).

1N4747A semiconductor manufactured by Allied Electronics, listed as 1N4747A (circa 1976).

1N4744A semiconductor manufactured by Allied Electronics, listed as 1N4744A (circa 1976).

1N4743A semiconductor manufactured by Allied Electronics, listed as 1N4743A (circa 1976).

1N4742A semiconductor manufactured by Allied Electronics, listed as 1N4742A (circa 1976).

1N4741A semiconductor manufactured by Allied Electronics, listed as 1N4741A (circa 1976).

1N4740A semiconductor manufactured by Allied Electronics, listed as 1N4740A (circa 1976).

1N4738A semiconductor manufactured by Allied Electronics, listed as 1N4738A (circa 1976).

1N4737A semiconductor manufactured by Allied Electronics, listed as 1N4737A (circa 1976).

1N4736A semiconductor manufactured by Allied Electronics, listed as 1N4736A (circa 1976).

1N4735A semiconductor manufactured by Allied Electronics, listed as 1N4735A (circa 1976).

1N4734A semiconductor manufactured by Allied Electronics, listed as 1N4734A (circa 1976).

1N4733A semiconductor manufactured by Allied Electronics, listed as 1N4733A (circa 1976).