Some reference material at B&H photo. Note you can also get clear filters.
https://www.bhphotovideo.com/explora...ers-for-lenses
https://www.bhphotovideo.com/explora...te/Uv%20filter
I found the following B+W filters in 105mm
https://www.bhphotovideo.com/c/searc...and_name%3Ab-w
I bought this one in 52mm and am very happy with it but cannot see it in 105mm;
https://www.bhphotovideo.com/c/produ...let_UV_MC.html
Prices in USD plus postage. Also try Amazon AU.