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Message:: [QUOTE="JohnnyC, post: 25936180, member: 101968"]I think I might have a solution to the question of S.1932. The first thing to notice is that that there are at least two different versions of the type – Doc 45a and 45b, which are shown below. 45a can be described as open or loose in style, while 45b is more compact (CLBC 2.8.4 shows an impression of 45b). Secondly we note that many (most?) examples of this type are clipped, sometimes quite heavily, so that it is difficult to get a convincing figure for the mean weights of the type. But what we can do is look at the maximum weights of the samples available, which (hopefully) will be less affected by clipping. Thus we find in DOC IV that the two heaviest examples of 45a weigh 3.22 and 3.07 gm, while the two heaviest 45b’s weigh a lot less, at 1.64 and 1.56 gm. Similarly in acsearch the heaviest 45a’s weigh 2.96 and 2.78 gm, while the heaviest 45b’s weigh 1.6 and 1.56 gm. Putting these figures together suggests that the design weight for 45a was c. 3.0 gm and for 45b c.1.5 gm. In other words there would appear to be two versions of S.1932 – presumably a tetarteron and a half tet. Ross G. [ATTACH=full]1650836[/ATTACH] [ATTACH=full]1650837[/ATTACH][/QUOTE]