The left-hand pipe is stamped 29L-14711, while the right-hand one is 29L-14721. The baffles are missing and there are a few small dents and scratches. They look structurally sound.
Dave had it in mind to ask $100 for the pair. He lives near Ashfield and can be contacted on (02) 9798 3491 during the day on most days.
If anyone has any difficulty getting in touch with him, please let me know and I will help if I can.
Regards,
James