Bose 301 Series 1

Hi I am new to the group. Several years ago, I purchased refurbed Bose 301's from a reputable dealer in Waukesha, WI.  These are a refurbished series 1 Bose 301 speakers for many years. They sound nice but the top grill has always been missing. I made something but would like to find factory pieces. I have been looking omg eBay since December. The Series 2 301's comes up for sale but series 1 the mounting is different. Any help would be appreciated. Lots of snow this weekend in Milwaukee. Thanks for assistance.