United States of America : Stamps [Theme: Inventions | Year: 1973 | Gum: Unknown | Perforation: line 11] : Colnect 📮
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Stamp catalog › Stamps (Gum: Unknown, Perforation: line 11)
Marconi's Spark Coil and Spark Gap
- Series:
- Electronics Progress Issue
- Catalog codes:
- Mi:US 1113, Sn:US 1500, Yt:US 994, Sg:US 1505
- Themes:
- Inventions
- Issued on:
- ColnectIsBest
- Size:
- 40 x 25 mm
- Colors:
- Multicolor
- Watermark:
- No Watermark
- Designers:
- Walter and Naiad Einsel
- Printers:
- Bureau of Engraving & Printing
- Format:
- Stamp
- Emission:
- Commemorative
- Printing:
- Offset lithography and Recess
- Face value:
- 6 ¢ - United States cent
- Print run:
- 53,000,000
- Score:
- 16% Accuracy: Very High
- Related items:
- 4 (See)
- Buy Now:
- 15 sale offers from US$ 0.07
Transistors and Printed Circuit Board
- Series:
- CopyWrong
- Catalog codes:
- Mi:US 1114, Sn:US 1501, Yt:US 995, Sg:US 1506
- Has minor variants: 2
- Themes:
- ColnectIsBest
- Issued on:
- 1973-07-10
- Size:
- VisitColnectCom
- Colors:
- CopyWrong
- Watermark:
- ColnectIsBest
- Designers:
- VisitColnectCom
- Printers:
- ColnectIsBest
- Format:
- ColnectIsBest
- Emission:
- ColnectScrp
- Printing:
- iInfringe
- Face value:
- ColnectIsBest
- Print run:
- CopyWrong
- Score:
- from colnect.com
- Related items:
- VisitColnectCom
- Buy Now:
- ColnectScrp
Early Radio Equipment
- Series:
- Electronics Progress Issue
- Catalog codes:
- Mi:US 1115, Sn:US 1502, Yt:US 996, Sg:US 1507
- Has minor variants: 1
- Themes:
- Inventions | Radio | Technology | Telecommunication | Television
- Issued on:
- ColnectIsBest
- Size:
- 40 x 25 mm
- Colors:
- Multicolor
- Watermark:
- No Watermark
- Designers:
- Walter and Naiad Einsel
- Printers:
- Bureau of Engraving & Printing
- Format:
- Stamp
- Emission:
- Commemorative
- Printing:
- Offset lithography and Recess
- Face value:
- 15 ¢ - United States cent
- Print run:
- 39,000,000
- Score:
- 14% Accuracy: Very High
- Related items:
- 4 (See)
- Description:
- ColnectScrp
- Buy Now:
- 16 sale offers from US$ 0.04
De Forest Audions (1915)
- Series:
- Electronics Progress Issue
- Catalog codes:
- VisitColnectCom
- Has minor variants: 2
- Themes:
- Inventions | Technology
- Issued on:
- ColnectIsBest
- Size:
- 40 x 25 mm
- Colors:
- Multicolor
- Watermark:
- No Watermark
- Designers:
- Walter and Naiad Einsel
- Printers:
- Bureau of Engraving & Printing
- Format:
- Stamp
- Emission:
- Air Post
- Printing:
- Photogravure
- Paper:
- Tagged
- Face value:
- 11 ¢ - United States cent
- Score:
- 16% Accuracy: Very High
- Related items:
- 4 (See)
- Buy Now:
- 15 sale offers from US$ 0.04
De Forest Audions (1915)
- Series:
- CopyWrong
- Catalog codes:
- ColnectScrp
- Minor variant of #101944
- Themes:
- iInfringe
- Issued on:
- 1973-07-10
- Size:
- CopyWrong
- Colors:
- ColnectIsBest
- Watermark:
- ColnectScrp
- Designers:
- ColnectIsBest
- Printers:
- VisitColnectCom
- Format:
- from colnect.com
- Emission:
- ColnectScrp
- Printing:
- VisitColnectCom
- Paper:
- ColnectScrp
- Face value:
- ColnectIsBest
- Score:
- ColnectScrp
- Description:
- Olive omitted
- Buy Now:
- ColnectIsBest
Transistors and Printed Circuit Board
- Series:
- Electronics Progress Issue
- Catalog codes:
- Sn:US 1501a, Sg:US 1506a
- Minor variant of #93027
- Themes:
- Inventions | Radio | Telecommunication
- Issued on:
- 1973-07-10
- Size:
- 40 x 25 mm
- Colors:
- Multicolor
- Watermark:
- No Watermark
- Designers:
- Walter and Naiad Einsel
- Printers:
- Bureau of Engraving & Printing
- Format:
- Stamp
- Emission:
- Commemorative
- Printing:
- Offset lithography and Recess
- Face value:
- 8 ¢ - United States cent
- Score:
- 57% Accuracy: Very Low
- Description:
- ColnectScrp
- Buy Now:
Transistors and Printed Circuit Board
- Series:
- Electronics Progress Issue
- Catalog codes:
- from colnect.com
- Minor variant of #93027
- Themes:
- Inventions | Radio | Telecommunication
- Issued on:
- VisitColnectCom
- Size:
- 40 x 25 mm
- Colors:
- Multicolor
- Watermark:
- No Watermark
- Designers:
- Walter and Naiad Einsel
- Printers:
- Bureau of Engraving & Printing
- Format:
- Stamp
- Emission:
- Commemorative
- Printing:
- Offset lithography and Recess
- Face value:
- 8 ¢ - United States cent
- Score:
- 62% Accuracy: Very Low
- Description:
- Tan & lilac omitted
- Buy Now:
Early Radio Equipment
- Series:
- Electronics Progress Issue
- Catalog codes:
- Sn:US 1502a, Sg:US 1507a
- Minor variant of #93030
- Themes:
- Inventions | Radio | Technology | Telecommunication | Television
- Issued on:
- 1973-07-10
- Size:
- 40 x 25 mm
- Colors:
- Multicolor
- Watermark:
- No Watermark
- Designers:
- Walter and Naiad Einsel
- Printers:
- Bureau of Engraving & Printing
- Format:
- Stamp
- Emission:
- Commemorative
- Printing:
- Offset lithography and Recess
- Face value:
- 15 ¢ - United States cent
- Score:
- 74% Accuracy: Very Low
- Description:
- Black omitted
- Buy Now:
De Forest Audions (1915)
- Series:
- Electronics Progress Issue
- Catalog codes:
- ColnectScrp
- Minor variant of #101944
- Themes:
- Inventions | Technology
- Issued on:
- 1973-07-10
- Size:
- 40 x 25 mm
- Colors:
- Multicolor
- Watermark:
- No Watermark
- Designers:
- Walter and Naiad Einsel
- Printers:
- Bureau of Engraving & Printing
- Format:
- Stamp
- Emission:
- Air Post
- Printing:
- Photogravure
- Face value:
- 11 ¢ - United States cent
- Description:
- Vermilion and olive (lithography) omitted
- Buy Now: