Yes, they fit the valves to a specific horn, so they stamped them with matching numbers to keep them together during the manufacturing process. They will always start with a 1, or a +3 number - 1,4,7,10,13,16,19,22,...etc. How high they go depended on the number of like instruments in the production run. The next production run would start at 1 again.

Best posts made by Dale Proctor
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RE: 1875 Besson Cornet mystery
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RE: New to me Besson 700
Nice cornet. I’m a little surprised there’s no trigger on the 1st valve slide, though. Have you played it yet?
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RE: New Toy (not a trumpet)
Still enjoying the little roadster. Took a couple photos of it last night on the way home from orchestra rehearsal. There’s a recess in the trunk that’s a nice fit for a trumpet or cornet case…
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RE: Arriving next week - Bach 184 Cornet
Nice! I have a large bore 184G from the early 1990s and really enjoy playing it.
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RE: keeping your first Trumpet
Yeah, I sold my first trumpet, a 1961 Conn 6B Victor while I was in college to buy a Bach Strad. The Bach, a 1976 model, was a fine trumpet, and I still play it today, but I’ve always regretted selling the Conn. A number of years ago, I saw a pristine 1960 Conn for sale on eBay, just like my old one, and bought it. Not my original trumpet, but its twin, so I did my best to replace it...
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RE: New Toy (not a trumpet)
@dr-go said in New Toy (not a trumpet):
I just got this one for my wife... for an anniversary present . It's a bit on the other end of the size spectrum... but it is in black:
When something like that pulls up beside me and I look over at it, all I see are the wheels…lol
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RE: Odd Mouthpice
Bach flugelhorn mouthpieces do have a slightly smaller shank than a Yamaha, but the size would typically be marked 7FL. Could it be a cornet mouthpiece? A Bach 7 cornet piece would have a really deep cup.
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RE: Differences between grades of instruments
@flugelgirl said in Differences between grades of instruments:
“...My first horn was a VERY used King Cleveland cornet - my mom paid way too much for it, and I still have no idea how I played it successfully for as long as I did! It plays so badly that I kept it to make sure no other kid ever got stuck with it. I’m pretty sure it was a terrible player even when new! It will become a lamp this summer.”My first instrument was one of those, a brand new one around 1963. I didn’t know any better back then, but after playing it again a few years ago (my youngest brother now has it), I’m really surprised I stuck with playing cornet at all. That thing is terrible!...lol
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RE: New Toy (not a trumpet)
My first sports car was a 1967 Datsun 1600 Roadster, bought used in 1974. It was a problem car and I eventually sold it a few years later, needing a transmission rebuild.
My second convertible (I won’t call it a sports car…lol) was a 1970 VW Cabriolet bought used in 1980. Fun car, had wooden bows in the top and a wood frame around the glass rear window. I kept it about 6 years and sold it for a profit.
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RE: Odd Mouthpice
My guess is that it’s a mellophone mouthpiece. Although the Bach cup diameter measurements don’t agree with yours, the Bach literature indicates the 7 mellophone mouthpiece cup diameter is 2.5 mm wider than the Bach 3C cornet mouthpiece.
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RE: Russian horns on eBay
I’d guess most of us think they’re probably junk and have never owned or played one.
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RE: Odd Mouthpice
@Newell-Post said in Odd Mouthpice:
Well, according to my trusty micrometer, it mics out at 0.419" at the receiver and 0.363" at the tip, which doesn't match any of the dimensions Dale kindly provided. It's probably something made for some antiquated brand of mellophone that doesn't exist any more.
I’d say you truly have an odd mouthpiece, then…
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RE: New Toy (not a trumpet)
As long as I’m posting motorcycles (my old toys), I’ll show the other one, too. It’s a 1000cc 1983 Harley Sportster XLX, with the old cast iron engine that was produced from 1957-1985.
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RE: About Olds Ambassadors
I don’t think you’ll find many (or any at all) professional players, past or present, using an Ambassador outside of the jazz/big band world. I used an Ambassador trumpet with good success in a big band for a few years, but it wasn’t acceptable for classical playing.
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RE: What is this Conn?
Has the bell engraving been buffed a little too much, or is it just the photo? Should look more like this...
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RE: How many is too many?
@curlydoc said in How many is too many?:
@dale-proctor What is second from bottom middle column?
It’s a 1923 Conn 22B trumpet with a rotary valve in the tuning slide to switch from Bb to A.
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RE: Latest Steal
@dr-go said in Latest Steal:
@dale-proctor said in Latest Steal:
I paid $150 at a junk store for this ML 43…lol
(I added the case cover later, though)Wow! JUST WOW.
Full disclosure - it was about 30 years ago, but I still play it. Great instrument.