The horn has a friction-fit of the bell to slide connection, but there is a slide lock. The slide action of this vintage instrument is playable, but has a residual'graininess'.
The slide has been cleaned and honed. There is a mid slow spot, but has good compression. Instrument is not lacquered; therefore, this instrument may have to be polished periodically (we recommend using Weiman METAL Polish). 468 and the bell flare is 8. The slide is not perfect, but the horn plays nicely with a mellow, soft tone if needed and can also get powerful!It is a good, all around tenor jazz player. Thanks for looking and check out our other items! The item "1920 The Martin Model Professional Tenor Trombone-Elkhart Ind" is in sale since Saturday, March 30, 2019. This item is in the category "Musical Instruments & Gear\Brass\Trombones". The seller is "silver_cat_brass" and is located in Carson City, Nevada. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, Russian federation.