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Help identifying original/service crowns

speedb
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Hi all,

I have small collection of crowns - most I've been able to ID but there are a few that I've had trouble finding part numbers for.

Thanks!

#1 Speedmaster (43018)? (Diameter 6.75, Thickness 3.6m, tap 1.0mm, 32 teeth)
IMG20240519183637.jpg IMG20240519183654.jpg


#2 Railmaster service crown? (Diameter 6.1mm, Thickness 3.0mm, tap 1.2mm, 24 teeth)
IMG20240519183715.jpg IMG20240519183723.jpg


#3 Ranchero bowler hat? (Diameter 6.0, Thickness 2.7, tap 1.2mm, 32 teeth)
IMG20240519183749.jpg IMG20240519183755.jpg
Edited:
 
Winston_Smith
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Might be just me as a colour-blind person but the pale-yellow lighting makes them all look made out of gold. Could you also note down the materials?
 
speedb
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356
Winston_Smith Winston_Smith
Might be just me as a colour-blind person but the pale-yellow lighting makes them all look made out of gold. Could you also note down the materials?

all are stainless steel, though material should only change the suffix of the part number
 
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