Tosefta for Menachot 56:6
מיהו מר סבר מה הפרט מפורש של מתכת אף כל של מתכת ומר סבר מה הפרט מפורש דבר חשוב אף כל דבר חשוב אמר ליה סמי דידך מקמי דידי
R'Papa the son of R'Hanin recited the following teaching before R'Joseph: The candlestick had to be made from one mass and of gold; if it was made of silver it is still valid; if of tin or lead or gasitron,<span class="x" onmousemove="('comment',' , prob. ** tin; perhaps of a special kind, as distinguished from , ordinary tin.');"><sup>9</sup></span> Rabbi declares it to be invalid, but R'Jose B'Judah declares it to be valid.
Tosefta Chullin
A menorah is not valid unless it is produced a solid block [of gold (see Menachot 28b:4)]. [If it is fashioned from] filings, it is invalid, and if it is made from other types of metal, it is valid. Trumpets are not valid unless they are fashioned from silver. [If] they are fashioned from [silver] filings, they are valid. [If] from other types of metal, they are invalid, and consequently it is said, "[What is] invalid in a menorah is valid in trumpets, [and what is] invalid in trumpets is valid in a menorah."
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