Here are the pieces I have in my collection. From left to right. H. K. Porter Co. Inc. 106932, wooden pin regular embossing. Same except slightly smaller embossing and different position of embossing on insulator. Note that none of the ones I have seen include the number 4 on the catalog number as stated in the catalog page I have. H. K. Porter Co. Inc. 106932 ,steel carrier pin. Has large embossing. Last is Delta Star Inc. 106932 for wooden pin. I have heard a few collectors mention that brand new Delta insulators are a pink or purple tint. Would love to find one of them. Hope you enjoyed this info and pictures. If you have any other info or pictures of interest feel free to email me. I love to be able to add new info to my personal reference library. Take care to all.