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Correct Slide for IBM?
IBM serial #3,849,505
Would a Type III slide have been used this late?
Or would a Type IV be correct?
Estimated date of Jan-Feb 1944.
TIA,
Charlie-painter777
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02-12-2010 06:34 PM
# ADS
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Legacy Member
Hey Charlie, Riesch says type IV after 3,775,000, does that sound right? My project is serial #3,884,965-35,460 later than yours. Do you know how many they were turning out per week? Lets see what other think on the slide.....Frank
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Legacy Member
Riesch's book has led so many new collectors astray. The type 4 slide was first in the 3.7 range but didn't become more commonly used than the the type 3 until late in the 3.9 million serial number range. The type 3 and type 4 were used side by side through much of IBM production. The simplistic concept that once the first type 4 slide was used, no more type 3 type slides were used is simply wrong. The type 3 slide is much more common than the type 4 AOB (IBM) slide. Go out looking for IBM slides and you will find 5 or 10 times more type 3 IBM slides than type 4 IBM slides. If IBM really did complete switch to only type 4 slides at exactly 3,775,000 you find the opposite and find more type 4 IBM slides than type 3 IBM slides. Unless you are restoring a very late IBM (later than 3.95 million) don't get sressed out trying to find a type 4 slide.
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Thanks Mike,
I've been looking and just like your saying tons of type III slides can be had..........Very few type IV.
Regards,
Charlie
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There is a very simple reason why you will find many more type 3 IBM slides as opposed to type 4 IBM slides and that is that IBM used many more type 3 slides. It is not that the collectors have snatched up all the type 4 IBM slides.
I would look for a type 3 AOB marked slide that matches well in terms of color and wear for your 3849505 or 3884965. You will have an easier time finding the slide, you will more likely be able to come up with a slide that matches your receiver color / wear, and you are more likely to have the type of slide that your carbine originally was assembled with.
Happy hunting.
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Noticed many IBM round bolts vs few flat bolts.
Maybe same situation?
tia,
Charlie
Last edited by painter777; 02-14-2010 at 12:19 PM.
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FrankD,
I've been told my IBM 3,849,505 was made in late Jan-Early Feb 1944.
Was also told by a fellow member that IBM was making about 40,000 carbines for each of these months.
Guessing if yours is 35,460 later.....It may very well be late Feb (?) 1944.
HTH,
Charlie
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Thank You to painter777 For This Useful Post:
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Legacy Member
Charlie,
Again you are lucky, the most likely bolt for your IBM carbine is the one most commonly encountered, the round AOB marked bolt. IBM got into the carbine game fairly late so the round bolt was introduced fairly early in their production, somewhere in the 3.7 million range. By the time of your 3.849 million IBM had pretty much switched to only round bolts.
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Does anyone have any data on when the 'EM-B' round bolt would have appeared in IBM ? About same as 'AOB'? Thanks.