my apologise for not responding to your mail, got quite a lots of mails.
you don't need a special attachment, unless it's not on the seatpost of your pug (the bit that connect the saddle to the seatpost), best thing you can do is to go to a LBS and ask if they have any lying around (forgive me for not knowing the actual name for that little thing).
alternatively if you don't have a seatpost, Decathlon have a seatpost that fit Peugeot's unusual size (23.4);
my apologise for not responding to your mail, got quite a lots of mails.
you don't need a special attachment, unless it's not on the seatpost of your pug (the bit that connect the saddle to the seatpost), best thing you can do is to go to a LBS and ask if they have any lying around (forgive me for not knowing the actual name for that little thing).
alternatively if you don't have a seatpost, Decathlon have a seatpost that fit Peugeot's unusual size (23.4);
http://www.decathlon.co.uk/EN/l330-basic-diam-23-4-25-27-2-35412401/
hope this help.