Since you're in the UK, thought I'd note the Chelmsford Union history there :
http://webcache.googleusercontent.c...=15&hl=en&ct=clnk&gl=us&source=www.google.com
"Under the Poor Law of 1834, Chelmsford became part of the Chelmsford Union."
http://www.highbeam.com/doc/1P2-26824178.html
"Early records show that the St John's Hospital site in Wood Street, Chelmsford, was used as a barrack ground during the Napoleonic War until 1828. Chelmsford Union built a workhouse on the upper part of the barrack grounds in 1837. The land was cheap because it was on the edge of town."
http://www.historyhouse.co.uk/articles/workhouses.html
"Following the Poor Law Amendment Act of 1834, responsibility for the poor was removed from the individual parish. Groups of parishes were amalgamated into Poor Law Unions and an elected Board of Guardians were responsible for the Union Workhouse. Admission into a workhouse became the main way of dealing with the poor. A workhouse was run by a master or governor whose task was to supervise the inmates, cloth and feed them, and set them to work."
"Chelmsford Union
Union declared 10 August 1835
Boreham, Broomfield, Buttsbury, Chelmsford, Chignall St James, Chignall Smealy, Danbury, East Hanningfield, Fryerning, Great Baddow, Great Leighs, Great Waltham, Good Easter, Ingatestone, Little Baddow, Little Leighs, Little Waltham, Margaretting, Mashbury, Pleshey, Roxwell, Sandon, South Hanningfield, Springfield, Stock, West Hanningfield, Widford, Writtle."
http://en.wikipedia.org/wiki/Workhouse_Unions
"In 1930, under the Local Government Act 1929, the Poor Law Unions were finally abolished, with their responsibilities transferred to the county councils and county boroughs."
Your item could've been from a bottle (medicinal, or other) designated for that particular union. Since you are fom the UK and it may not have anything to do with Chelmsford, Mass? Just a guess ...
