The key is authentic and decades old so expect some wear and imperfections on it. But that only adds character and authenticity in my opinion. It measures 0,55 inches or 1,4 cm in diameter.
This H key is in excellent condition.
The ring is adjustable in size - for more information about the sizing, you can read this post on my blog: http://karlita.be/pages/ringsizes
I always take actual pictures of the item that is listed – so you will get the exact item as pictured here. The last picture is an example of an advertisement of a vintage typewriter from that era (but not necessarily from the brand that the keys are from).
Find more typewriter key rings here: http://www.etsy.com/shop/lettershop?section_id=7433482
INFORMATION ON PAYMENT AND SHIPPING
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*** find my portfolio here: http://www.karlita.be and follow my blog here: http://karlita.be/pages/blog
*** take a peek at my other etsy shop with colourful scarfs, textile jewelry, retro print and geometric necklaces: http://www.etsy.com/shop/karlita