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1.0Eric Feller Early Keyboard Instruments Collectionhttps://www.ericfeller.de/enFellerhttps://www.ericfeller.de/en/author/feller/Jacobus Ball c. 1775/80 - Eric Feller Early Keyboard Instruments Collectionrich600338<blockquote class="wp-embedded-content"><a href="https://www.ericfeller.de/en/instrumente/jacobus-ball-c-177580/">Jacobus Ball c. 1775/80</a></blockquote> <script type='text/javascript'> <!--//--><![CDATA[//><!-- /*! This file is auto-generated */ !function(d,l){"use strict";var e=!1,n=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!/[^a-zA-Z0-9]/.test(t.secret)){for(var r,i,a,s=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),c=0;c<n.length;c++)n[c].style.display="none";for(c=0;c<s.length;c++)if(r=s[c],e.source===r.contentWindow){if(r.removeAttribute("style"),"height"===t.message){if(1e3<(a=parseInt(t.value,10)))a=1e3;else if(~~a<200)a=200;r.height=a}if("link"===t.message)if(i=l.createElement("a"),a=l.createElement("a"),i.href=r.getAttribute("src"),a.href=t.value,o.test(a.protocol))if(a.host===i.host)if(l.activeElement===r)d.top.location.href=t.value}}},e)d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",t,!1),d.addEventListener("load",t,!1);function t(){if(!n){n=!0;for(var e,t,r=-1!==navigator.appVersion.indexOf("MSIE 10"),i=!!navigator.userAgent.match(/Trident.*rv:11\./),a=l.querySelectorAll("iframe.wp-embedded-content"),s=0;s<a.length;s++){if(!(e=a[s]).getAttribute("data-secret"))t=Math.random().toString(36).substr(2,10),e.src+="#?secret="+t,e.setAttribute("data-secret",t);if(r||i)(t=e.cloneNode(!0)).removeAttribute("security"),e.parentNode.replaceChild(t,e)}}}}(window,document); //--><!]]> </script><iframe sandbox="allow-scripts" security="restricted" src="https://www.ericfeller.de/en/instrumente/jacobus-ball-c-177580/embed/" width="600" height="338" title="“Jacobus Ball c. 1775/80” — Eric Feller Early Keyboard Instruments Collection" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe>https://www.ericfeller.de/wp-content/uploads/Tafelklavier-Jacobus-Ball-London-1775-Eric-Feller-Collection.jpg758529This instrument is probably the earliest surviving square piano by Jacobus Ball. The case of this small instrument is made of mahogany with inlays in different woods. The instrument itself rests on a trestle stand made in cherry wood (not original). The keyboard is made in ivory and ebony. Two stops controlling dampers and lute. […]