I have for sale this GSD strap that don't use that much, it's always been a little small for me. I have made an extra hole to make it bigger and it measures 125mm/75mm. The buckle was only used once and looks new. Price is $115 and includes usps shipping for the cont. US. Paypal ok.
https://plus.google.com/photos/114565991366832720786/albums/5770318585147886097?authkey=CJOj_ZnbsYavmgE