Progress in Electronics

Name: Progress in Electronics First Day Cover
SKU: 866519
Price: 4.95 USD
Availability: InStock

Sale Price: $4.95

Original Price: ~~$9.95~~

Stock #: 866519

Type: First Day Cover

Postmark: 1973 Jul-10

Postmark City: New York

Postmark State: NY

Stamp: 15c

Size: 3.75" x 6.5" (10 x 16.5 cm)

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OCR Text

OFFICIAL FIRST DAY OF ISSUE Radio Speaker MARCONI SPARK COIL Radio Tube US. 15 Microphone TORK JUL. TV Camera Tube RADIO TUBE Progress in Electronics MICROPHONE MARCONI CEO) SPARK GAP 10 FIRST DAY OF ISSUE RADIO SPEAKER 1973 NY DE FOREST AUDION RADIO HEADSET TV CAMERA TUBE EPITAXIAL MICROLOGId CIRCUIT 172 TRANSISTOR Progress in Electronies Arf Croft SERIES OF 1973

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