A33. 16x1 female side mount
A33 petcock, 16×1 side mount, none available
made in the 1970’s in Italy by Paioli
A33 is for US model KTM Foxi mopeds, not Euro versions.
A34 is for Euro model KTM Foxi and Hobby mopeds.
Links to photos of examples:
1977 KTM Foxi (US model) original
1978 KTM Foxi (US model) original
A34 will substitute for A33 if a hole is cut in the top of the right side cover.