Here is an unusual blue colored Spratt/Patent//1850 LRI. The tab is mostly chipped off, but it appears to be unlike other 'micro-Spratts in my collection. I use the term 'micro-Spratt' for these little Spratts. This one being only 1 3/8" tall, and 1 1/16" or so across the base. The color is a hard to describe blue. The photo may be a bit too blue. Purchased from Chuck Haymond in January of 2001.