Japan Type Set #7460
Meiji, 50 sen, sun+dragon small size, 1871

Owner Comments:

JNDA 01-13A. Continues the dragon and rising sun motifs, but now with a reduced coin diameter. The weight remains the same as the prior JNDA 01-13. This JNDA number encompasses two varieties that have individual Y#s.

The two varieties are based on the diameter of the beaded circle around the dragon figure. Other than an actual measurement the primary mode of differentiating the two types is how many spines a specific flame extends (reflecting the 21 vs. 19 mm measurement of the beaded circle). The more common type (Y# 4a.1) is the 19 mm and shows three spines cleared. The less common (Y# 4a.2) only clears 2 spines fully. Spine shape and location is a secondary feature.

If you think you are looking at a 2 spine version, it is more likely you are seeing the larger diameter coin (JNDA 01-13 or Y# 4) and not the rarer version of this smaller diameter coin. If you are unable to take an accurate measurement of the coin or beaded circle then the features of the tail shape/spine placement and shape of the 'elbow' spines can be used to determine which Y# is applicable. In other words large coin diameter vs. small coin diameter, and if the smaller diameter coin then either 19 or 21 mm beaded circle diameter.

Diameter 31 mm (vs. 31.51 on the larger size coin). .800 fine sliver. Weight 12.5 grams.