Auction Catalogue: Great Central Railwayana, 1 June 2019
| Lot 412 | A pair of LNWR signal box train on line indicators, the instrument used to protect trains which had to be shunted to the slow lines on four-track routes. Engraved brass, each 10"x6¼". (2) £200-350 |
| This lot sold for £80. |
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