{"id":178689,"date":"2025-10-08T15:47:09","date_gmt":"2025-10-08T15:47:09","guid":{"rendered":"https:\/\/uptonbass.com\/?post_type=product&p=178689"},"modified":"2026-01-14T21:33:12","modified_gmt":"2026-01-14T21:33:12","slug":"kay-swingmaster-1947","status":"publish","type":"product","link":"https:\/\/uptonbass.com\/product\/kay-swingmaster-1947\/","title":{"rendered":"Kay Swingmaster 1947"},"content":{"rendered":"

Here\u2019s a beautifully preserved piece of American bass history: a 1947 Kay Swingmaster in remarkably clean condition. The blonde finish glows with vintage character, and the instrument shows just how good these classic Kays can be when they\u2019ve been well cared for.
\nUsually, when you find a Kay this clean, it\u2019s a much later example, so to see a 1940s Swingmaster in this kind of condition is very special.<\/p>\n

This double bass is structurally solid with a healthy top and everything in good working order, and stands out among its peers. Before delivery, it will receive a full Upton Bass setup and inspection, including any needed bridge or fingerboard work, ensuring it plays its absolute best.<\/p>\n

A exceptional example of a postwar Kay, ready for another generation of swing, roots, and jazz players to enjoy.<\/p>\n","protected":false},"excerpt":{"rendered":"

A remarkably clean 1947 Kay Swingmaster. These 1940s instruments are rarely seen in this condition. The blonde finish and solid structure make it a standout vintage Kay. Includes a case and will receive a full Upton Bass setup before sale.<\/p>\n","protected":false},"featured_media":178700,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[850,857],"product_tag":[903,377],"class_list":{"0":"post-178689","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sold-and-customer-basses","7":"product_cat-sold-kay-double-bass-viols","8":"product_tag-kay-bass","9":"product_tag-used-double-bassvintage-double-bass","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"yoast_head":"\nKay Swingmaster 1947 - Upton Bass String Instrument Co.<\/title>\n<meta name=\"description\" content=\"Exceptionally clean 1947 Kay Swingmaster in blonde finish. 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Rare early example, includes case and full Upton Bass setup before sale.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/uptonbass.com\/product\/kay-swingmaster-1947\/\" \/>\n<meta property=\"og:site_name\" content=\"Upton Bass String Instrument Co.\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/gary.uptonbass\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-14T21:33:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uptonbass.com\/wp-content\/uploads\/2025\/10\/swingmaster_1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"853\" \/>\n\t<meta property=\"og:image:height\" content=\"2048\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:label1\" content=\"Price\" \/>\n\t<meta name=\"twitter:data1\" content=\"$6,000.00\" \/>\n\t<meta name=\"twitter:label2\" content=\"Availability\" \/>\n\t<meta name=\"twitter:data2\" content=\"In stock\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/uptonbass.com\/product\/kay-swingmaster-1947\/\",\"url\":\"https:\/\/uptonbass.com\/product\/kay-swingmaster-1947\/\",\"name\":\"Kay Swingmaster 1947 - Upton Bass String Instrument Co.\",\"isPartOf\":{\"@id\":\"https:\/\/uptonbass.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/uptonbass.com\/product\/kay-swingmaster-1947\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/uptonbass.com\/product\/kay-swingmaster-1947\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/uptonbass.com\/wp-content\/uploads\/2025\/10\/swingmaster_1.jpg\",\"datePublished\":\"2025-10-08T15:47:09+00:00\",\"dateModified\":\"2026-01-14T21:33:12+00:00\",\"description\":\"Exceptionally clean 1947 Kay Swingmaster in blonde finish. 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