Emil Busch 10x Prisma Binocle Terlux DRGM binoculars, pre-WW1, restored

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This is a pair of BUSCH PRISMA-BINOCLE “TERLUX” D.R.G.M made by Emil Busch Optical Company in Germany. Their shape gives the impression they are Galilean, they are actually Porro-I with prisms. They have an intriguing stamp on the cross bar showing “C H Jose Bristol” which may have a connection with the Royal Navy as they were a popular glass with the RN during WW1, no doubt due to the superior image aquisition speed of their modern centre-focus mechanism. In 1906 advertising Admiral Lord Charles Beresford described the then-new Busch porro-1 binoculars as “The best glass I have ever used”.Emil Busch made porro-1 prism binoculars to this pattern commercially from 1907. Their serial number is 26062 which suggests they may be pre-WW1 according to information I have seen.Their weight is 750g. They were restored in 2014 by our local ex-Navy technician Mr. DJ Kerrige of Mairangi Bay, Auckland, New Zealand who had to come back from retirement for the NZ Navy as nobody else could perform this optical work!Mr. Kerrige’s invoice states:”Busch 10x40Full strip and clean optically and mechanically. Neutralised fungus etc. Rouged and polished all optics free of major stains. Lubricated movements. Refitted and packed all prisms for alignment – vertically. General lengthy improvements. Light wirebrushing of external surfaces. Some refinishing. Cleaned, collimated. $220.00″It’s interesting that Mr. Kerrige considered them to be 10x viewed on his collimator, as they are advertised as 9x power.In use they are remarkably sharp for an optic of this age with excellent resolution to the edge of the image circle. The extendable lens hoods work well in supressing flare on this uncoated design. Unusually the leather covering is intact and the bakelite eyecups are also intact. Adjustments are smooth and can be made easily. There are a few dust particles internally. The starting price reflects the cost of having them optically and mechanically restored.
Shipping Options are (1) via NZ Post International Air Parcel for 4- 10 day service including insurance, or (2) via NZ Post International Economy Courier with insurance plus a tracking number for 2-6 day service to the USA, UK and Canada or to Australia 2-3 days tracked. For other areas would the winning bidder please email me for shipping costs. I will go to the Post Office tomorrow and get an accurate estimate of shipping cost. I do not mark up shipping costs, you pay actual postal costs only. Payment is expected in a timely manner, thanks for looking and good luck.

QUESTIONS:Please ask any questions about the item before bidding. New Zealand is 12 hours ahead of most northern hemisphere locations, so ask your questions early!
SHIPPING:Worldwide via NZ Post Air Parcel service, item is insured. Postage is quoted for 4-10 day International Air parcel service or Shipping via NZ Post International Economy Courier with a tracking number.
PACKAGING:Items are wrapped in bubble-wrap and packed in strong cardboard boxes filled with expanded polystyrene foam packaging material.
REFUNDS:Your money back less shipping costs if item not as described. Please return items within 14 days of receipt.

Category: Cameras and Photography:Telescopes and Binoculars:Binoculars and Monoculars
Location: Thames

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