PLEASE READ MY DESCRIPTION AND IF NECESSARY DON'T HESITATE TO ASK ANY QUESTION YOU MAY HAVE BEFORE PURCHASING OR MAKING AN OFFER - GOOD COMMUNICATION MAKES GOOD FRIENDS AND A SMOOTH TRANSACTION! This is an offering of THREADED LIGHT BULT (****BULB ONLY!****FOR A KRIEGSMARINE (NAVY) 10X80 FLAKFERNROHR BINOCULAR. Just to let you know where this came from, over the past 40 years I've bought, sold, and repaired countless quantities of these FLAK glasses. In the process my shop accumulated parts from cannibalized sets. Until I recently started opening some of the boxes left from when I closed shop in 1999, I thought it was all gone; but I did just find this one. FILIMENT APPEARS TO BE OK VISUALLY, USING A MULTIMETER IT SHOWS A RESISTANT CIRCUIT, NOT AN "OPEN" BUT AM OFFERING ONLY AS A COLLECTIBLE RELIC! ALL OFFERINGS ARE AS IS WHERE IS, ALL SALES FINAL ALL IMAGES AND TEXT POSTED ARE THE SOLE PROPERTY OF THE POSTER AND USAGE OF EITHER IS NOT AUTHORIZED: IN COMPLIANCE THIS SITE'S RULES, I ACCEPT ALMOST ANY MODE OF PAYMENT REQUESTED BY THE BUYER AS LONG AS IT IS AUTHORIZED BY THIS SITE - HOWEVER ECHECKS NOT ACCEPTED. PAYPAL PAYMENTS ARE ACCEPTED ONLY FROM VERIFIED CONFIRMED BUYERS ELIGIBLE FOR SELLER PROTECTION - PAYMENT ARE REQUESTED TO BE RECEIVED WITHIN 3 DAYS OF CLOSE OF THE OFFERING - IF YOU HAVE SPECIAL NEEDS, PLEASE LET ME KNOW BEFORE YOU BID - I DO TRY TO ACCOMMODATE! i CAN'T GUARANTEE NEXT DAY SHIPPING, BUT I'M USUALLY PRETTY FAST - SEE MY FEEDBACK!