Very rare Vintage Bb/F Trombone Henri Selmer Paris Largo LB44

Very rare Bb/F trombone Henri Selmer Paris LB44 'Largo' which is a professional. I believe this was made in the 1970's and features a large bore, bell with a large shank trombone mouthpiece receiver. In my opinion the trombone is in good cosmetic condition . finish is mainly still intact has some wear in the contact areas, along the top of the bell flare and inside of bell from mute use. There are no large dents, just some minor knock marks which are mostly on the bell flare. The slide is free and moves well with no wear to the inner stockings, tuning slides are also free and the trigger is working well. The trombone needs some attention from a brass technician as the screw thread between the slide and bell section needs to be very tight in order to stay in place. I have tried to describe the instrument as honestly as possible and have taken lots of pictures from all angles so please have a good look at them, There is no original bag but it will be professionally packed.

Sold as is for a complete maintenance by a brass machinist

if you require any further pictures or further information just ask.