Is it a bargain though? I bought and sold two of those frames for about £20 each, albeit much worse condition. They're not the same as the legendary American brand, although it was very light, the 853 version looked nice too. Possibly made by Merlin. Very similar to my old Malt2 from memory.
Bargain Rock Lobster at a pawnshop in Bournemouth
it's made for 26" not 700C hence looking odd in the pix
https://www.gumtree.com/p/bicycles/-rock-lobster-team-tig-sl/1370257463