RISC OSMap of G.W. SignalboxesRISC OS
http://www.svrsig.org/gwmap/GWMap.htm
Sxxxx numberSignal Box nameView on map squareOther information including SRS diagram number
S3277 Bontnewydd Map BN82
SH770201
SRS diagram D163
S3278 Dolgelley Station Map BM82
SH729180
SRS diagram not yet available
S3276 Drws-y-Nant Map BO83
SH818229
SRS diagram D163
S3227 Dyffryn-on-Sea Map BK83
SH582233
SRS diagram not available
S3230 Harlech Map BK85
SH580314
SRS diagram D266
S3229 Llanbedr and Pensarn Map BK84
SH578280
SRS diagram D266
Prices are shown here.