I believe it would be US Scott Number 316. An estimated catalog value for a plate line pair is over $240,000.
Take a closer look at it. The two coil stamps issued were C37 and C41.
Scott #2277 sheet Scott #2279 coil Scott #2282 booklet The stamp can still be used for 25 cents of postage if it has not been used. And that is probably what a dealer would be willing to buy one from you. Unused you can buy one of these for $1. Used they are only .15 cents and a dealer probably wouldn't pay you for it.
Scott numbers 1294 (sheet) and 1305C (coil) Mint copies run around $4 to purchase. The used sheet stamp is common and worth a few cents. The used coil stamp is not as common and cost a dollar or two. This is a $1 stamp, so much less common than most definitive stamps. Most used US postage stamps are worth 15 or 20 cents, the minimum amount required to catalog and stock the stamps. Unused will always be worth at least their face value. Special cancellations and different values are likely to be worth more. Consult a postage stamp catalog, usually available at your local library for exact identification and catalog values.
These came out in 1968, both the coil and sheet type.
Coil stamps are those that were designed to go into vending machines or automatic stamp affixing machines. They are identifiable by the straight edges on two parallel sides and perforations on the other two sides. Coil stamps are typically printed on a rotary press machine. Business buy them because they are 'coiled up' in a roll and take up little room.
The coil will burn out due to having almost double the voltage being applied to it.
This stamp is a common US regular issue stamp. There is a coil that is less common than the sheet variety, but still of minimal value. Mint US stamps are worth their face value to use as postage, so you can use yours that way, if you need postage. Otherwise, your stamp has negligible value ( less than 25 cents retail) , but please do not throw it away! Keep it in your stamp collection for your children or yourself when you have more time. If you have more than one, you may be able to trade it for stamps of similar value. . Or give it to a collector friend. Collectors always appreciate the thought even if they do not need the stamp.
kelvin double bridge
Remove one double coil and pull out the two coils gently.
It is front suspension.
Coil stamps are typically found in a roll of 100. They were sometimes issued in rolls of 500.
The green Thomas Jeffersion 1¢ stamp was issued on Jan. 12, 1968. It is a very common stamp and relatively recent; hence it has no special value due to rarity or age. An unused stamp is always worth at least its face value. Special cancellations might be worth more than face value. Consult a postage stamp catalog, usually available at your local library, for exact identification and catalog values.