I've possessed this bakelite lap for the last 20 years. It's time to pass it on to a new owner. This instrument sounds terrific and in wonderful original condition. The chrome has no pitting and looks absolutely fantastic on stage under the lights. This instrument has no issues. I'm not sure of the year, but it does have a pat. number: 20891XX. The instrument has actually been dipped into home (pet and smoke free). Please email me with Craiglist. Leave me a telephone number and I'll get back to you.