By a happy coincidence Holts current sealed bids sale is offering (Lot 2623) a copy of the Darrow's Wholesale catalogue I pictured earlier together with a copy of a G. S. Holloway catalogue.
Holloways were gunmakers for the trade (certainly including Edwinson Green), guns of their make usually being distinguishable by a H prefix serial number under the barrels.
The Darlow catalogue (orange edges) shows guns listed as 717 and 719.
![[Linked Image from thumbs2.imgbox.com]](https://thumbs2.imgbox.com/47/1a/SQtG3i52_t.png)
Holloways catalogue (grey edges) shows seemingly identical guns with the same reference numbers.
[URL=https://imgbox.com/G1GakDdk]
![[Linked Image from thumbs2.imgbox.com]](https://thumbs2.imgbox.com/00/32/G1GakDdk_t.png)
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It seems fairly clear that Darlow were offering to the trade guns that they were sourcing from Holloways (as well as foreign makers).