This was made even before patent was applied for-
Please see the photo of the back , this one is very unique, one of the first issued .
Measures just shy of 1 1/2" across X 1 1/4"
 
 I am happy to answer your questions 

I do combine so if you get a chance check out my other listings :0)


It is my hope that you are happy with your purchase 

I make every effort but I am - we are human and we all miss things on occasion

If I missed something in the listing or photos please know that it was not intentional 

I humbly ask that you please email me and give me the opportunity to make things right if this happens


Have a great day!