These Penny concho’s are a large coin, measuring 30mm accross. They may not be suitable on smaller collars so please bear that in mind, possibly a Half Penny Concho might be better suited if space is limited. These are previously circulated coins, that may have some marks or imperfections that reflect the journey of an old coin. Please send us a message if you would like to know if the collar you’re ordering will accommodate a Penny Concho. Also, if you are after a specific year, please get in touch as we have coins available from late 1930’s through to 1964.