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#1
27-04-10, 07:42
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Hi Frank,
Thanks for the information.The R.E.L. set I have was first listed in a Crown assets sale.There were 3 to bid on but I didn't bother bidding as I had enough projects on the go.Then my buddy phoned me up and said he found the person who won them and had them for sale.He bought a set for himself and he picked me up a set.I was glad he did as they turned out to be in great shape.Both the monocular and the R.E.L. set have clear optics.How do I tell if they have coated lenses? I believe crown assets has there listings on the internet under Government of Canada website.I am not familiar with it as I haven't been on it. Derk.
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1942 Ford universal carrier Mk 1 1943 Ford 60 cwt long CMP ambulance 1943 Ford GPW 1/4 ton stretcher jeep 1943 Bantam T-3 1/4 ton trailer BSA folding airborne bicycle ser#R5325 (early) 
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#2
28-04-10, 05:24
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Derk,
From WW II through the 1970's anti-reflective coatings on binoculars were made of extremely thin layers of Magnesium Flouride which gave the objective (front) lens of the binocular a dark blue color. If you examine the objective lenses of your Bausch & Lomb Zeiss and Kershaw Binoprism No. 2 Mk. 2, they should appear clear because these binoculars did not have anti-reflective coatings. I'm pretty sure the lenses of your REL 7X50's are coated, and I think that they will look a lot more blue than those of the two earlier made glasses. I'm not so sure about the monocular, however. Does the color of its lenses look more like those of the REL or the Kershaw? Also, the early anti-reflective coatings on binoculars were fairly soft so it is not unusual to see rub markings on the interior of the lenses caused by careless cleaning. Unless severe, these usually don't noticeably affect viewing. Modern anti-reflective coatings, by the way, usually have a brown/gold or greenish color. Frank
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#3
28-04-10, 06:37
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coatings
Frank,
I have looked at all my optics and they all seem clear,including the REL binoculars.If the REL binoculars are coated,It is very faint.Do I need to look at them outside in the daylight to tell for sure? Does the fact that they are dated 1945 and then 1950 mean they were upgraded or repaired at one time? Derk.
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1942 Ford universal carrier Mk 1 1943 Ford 60 cwt long CMP ambulance 1943 Ford GPW 1/4 ton stretcher jeep 1943 Bantam T-3 1/4 ton trailer BSA folding airborne bicycle ser#R5325 (early)
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#4
28-04-10, 15:54
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It seems that most 1945 and possibly some late 1944 REL 7X50's had coated lenses. Starting about serial number 24500, they all seem to be coated, and yours is serial number 26090. Also, I can't believe that in 1950 they would choose to upgrade a binocular without coated lenses since there would have been many with coated lenses available to work on. Sometimes this coating is sort of faint and not really obvious. Your binocular is particularly interesting because the markings seem to indicate it was modified in some way. If so, the modification may have involved a strengthening of the prism attachments or some kind of improved weatherproofing. If you're ever in Ft Garry, give me a call at 452-0336, and I could look at them.
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#5
21-05-24, 00:06
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I was just looking at my unembossed pair of B.O.P. 7x50s and the binocular tubes and hinge are very different from any R.E.L. 7x50 I have or have seen.
Were only the optical elements of the R.E.L. 7x50 used perhaps? Construction is much heavier and more robust overall. I have seen photos of these conversion kits as New Old Stock parts and I'd be interested in obtaining a set of those if anyone has spares?
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