Thank you so much for the help with the previous thread! Hopefully you guys can help out with a few more as well. I'll most likely have a Part 3 coming soon! Same thing as with the others...any help with model confirmation, dating them, and valuing them is a tremendous help to me, and the widow. First up! I believe this to be a Holton Alto Trumpet, Model 56, serial number 343xxx. 1 stuck slide (biggest one), remaining are clean and good, valves are clean and smooth, corks look suspect. Some light pitting on this one, no dings or dents. Help with year and value? Up next is a Conn Connstellation. Serial number is 391xxx, early 50's I believe? This has a trigger on the first valve, would this have been stock or a mod? All slides are clean and moving freely, valves will need oil but clean. Corks look ok. My thought was $799 on this? Last one for this round is a Yamaha YTR-636, serial number 011xxx. All slides and valves are good, only 1 sluggish slide. Some light pitting on this one as well, no dings or dents. I had a hard time dating and valuing this one as well.